We then developed the definition for a polygon as a class: A polygon is a 2D shape with straight sides and it is a closed figure. prepared to explain your reasoning. . and point Open the next applet. If AE = 4, how long is the corresponding distance in the second figure? B) A polygon is a quadrilateral if and only if it has four sides. For example, Polygon 2 is a scaled copy of Polygon 1. A: ½ × 3 units × 8 units = 12 sq units What is the polygon is concave? B D I K 4.3: Scaled or Not Scaled? The plural of vertex is vertices. These parts could be points, segments, or angles. - the answers to estudyassistant.com Figure B has the same number of edges as Figure A. For 7-11, tell whether one figure is a dilation of the other or not. DEF Classify polygon by the number of sides. Classify polygon by the number of sides. Figure B has the same perimeter as Figure A. What is the scale factor from Polygon A to Polygon B? Each point in Polygon 1 has acorresponding point in Polygon 2. For problems 2-3, tell whether the figure is a polygon. Explain your reasoning. 2)-111 3) It is because number and its conjugate have the same numbers but their second components are opposite to each other. Which is a valid conclusion from these statements? If not, explain why. Andre decomposed the hexagon into a rectangle and two triangles. Explain or show your reasoning. Explain or show your reasoning. For #2-4, use the figure shown to the right. Figure B has angles with the same measures as Figure A. ... then it has four sides. All the sides have to touch in a polygon. ... equilateral, equiangular, or regular. If it is a polygon, whether it is convex or concave. Pause here so your teacher can review your work. Priya thinks that B, C, and D are scaled copies of A. Tyler says B and D are scaled copies of A. If so, tell what type. The second H-shaped polygon is a scaled copy of the first. Draw a scaled copy of this polygon that has a perimeter of 30 units. The area of the hexagon is 31.2 sq in + 62.4 sq in = 93.6 sq in. OPTIONS: A) A figure is a quadrilateral if and only if it is a polygon. This number is called the scale factor. If AE=4, how long is the corresponding distance in the second figure? The angle measures in Polygon 2 are the same as the corresponding angle measures in Polygon 1: for example, the measure of angle Let’s describe features of scaled copies. … The Open Up Resources math curriculum is free to download from the Open Up Resources website and is also available from Illustrative Mathematics. The height of the triangles is therefore 6 in ÷ 2 = 3 in. Explain or show how each copy has been scaled from the original (Triangle O). Figure B has the same perimeter as Figure … For any parallelogram that you make, find its area and explain your reasoning… If IK=5, how long is the corresponding distance in the first figure? 7. [The apothem is at its shortest length with the regular triangle and increases as the number of sides in the polygon increases. in Polygon B. Explain your reasoning. Hence, the area of this trapezoid is ½ × (4 units + 8 units) × 3 units = 18 square units. Pause here so your teacher can review your work. If a quadrilateral is a parallelogram, then its opposite angles are congruent. Andre's method: Note how the two side triangles fit into the middle rectangle. These parts could be points, segments, or angles. Figure B has angles with the same measures as Figure A. Consider the irregular hexagon below. Here is Triangle O, followed by a number of other triangles. The line segments never cross each other except at the end points. Copyright © 2005, 2020 - OnlineMathLearning.com. Yes. The lengths (in feet) of two sides ora regular expressions 8x 6 and 4x + 22. Find the area of the parallelogram and explain your reasoning. For each graph below, describe a sequence of transformations that takes each polygon to its image. BEAT THE TEST! For example, a square is a polygon which has four sides. The area of both triangles is 2 × ½ × 10.4 in × 3 in = 31.2 sq in. On the grid, draw three different triangles with an area of 12 square units. What is the scale factor from Polygon A to Polygon B? . In addition, if a delivery fee is charged, the fee would have to be proportional to the number of items ordered. 6 \boldcdot 1.5 = 9 5. Anticipated misconceptions Students may interpret the area of Figure B as the entire region inside the outer boundary including the unfilled square. Explain your reasoning. polygon and its copy. 4. 3. Vocabulary. 3. ... find the scale factor for each scale copy and explain your reasoning. Polygon is the combination of two words, i.e. Tell whether the polygon is equilateral, equiangular, or regular. Explain your reasoning. in Polygon B. Priya and Tyler are discussing the figures shown below. Explain your reasoning. When part of an original figure matches up with part of a copy, we call them corresponding parts. These could be points, segments, angles, or distances. Show your reasoning. Clarify that we want to compare the areas of only the shaded parts of Figure B and Figure A. triangle. This parallelogram can be changed by dragging the green points on its vertices. Identify each type of smaller polygon you form. The number of angles in the polygon can be determined by the number of sides of the polygon. Find the area of the shaded region(s) of each figure. Explain your reasoning. If it is a polygon, whether it is convex or concave. a Is the polygon regular Explain your reasoning b Find the measures of C and E from SEHS 2739 at Valencia High Select all of the statements that must be true: Figure B is larger than Figure A. Answer: 3 question Tell whether each figure is a polygon. h, where a and b are the trapezoid's parallel sides. 2 Reasoning and Proofs Mathematical Thinking: Mathematically proficient students can apply the mathematics they know to solve problems arising in everyday life, society, and the workplace. 2. Explain or show your reasoning. A Polygon is a closed figure made up of line segments (not curves) in a two-dimensional plane. If IK = 5, how long is the corresponding distance in the first figure? the rest of each figure. Select all the statements that must be true for any scaled copy Q of Polygon P. answer choices / y / \ \ \, \ I/ L ---I I I 'I -a. For example, Polygon 2 is a scaled copy of Polygon 1. Show Figure… Problem 35. Show your reasoning. Complete each equation with a number that makes it true. a. b. c. d. Solution a. The larger figure is a scaled copy of the smaller figure. Figure B is a scaled copy of Figure A. Explain your reasoning. Answer: 1) The conjugate for is . It can't be left open. Is the figure a polygon? Explain your reasoning The apothem of a regular polygon is always less than the radius. 2) Rotate segment AC 180° around point A. Figure B is a scaled copy of Figure A. Solution. B, D, E. Problem 3. 4. One road sign for railroad crossings is a circle with a large X in the middle and two R’s—with one on each side. If $$IK=5$$, how long is the corresponding distance in the first figure? Explain your reasoning. Try the free Mathway calculator and What other properties do you notice in the figure? when you apply one transformation to a figure and then apply another transformation to its image, the resulting transformation is a composition of transformation ... when you use deductive reasoning, your establishing that if a set of properties is accepted as true, something else must be true. If a polygon has four sides, then it is a quadrilateral. (Skills Review I landbook) 10 in. 6. Tell whether the polygon is equilateral, equiangularr or regular. Here are two quadrilaterals. The larger figure is a scaled copy of the smaller figure. Explain your reasoning. The larger figure is a scaled copy of the smaller figure. For example, point Solution. ... A polygon is a two-dimensional figure composed of straight line segments. , The point where two segments connect is a vertex. Explain or show your reasoning. Pause here so your teacher can review your work. Explain your reasoning. B, D, E. Problem 3. If it Is not, explain why. Andre says “I wonder if I should add 4 units to the lengths of all of the segments?” What would you say in response to Andre? Sample markings: 2. or 0.25. Create the scaled copy that Andre wants. For example, segment corresponds to segment b. Explain or show your reasoning. Show one pair of corresponding points and two pairs of corresponding sides in the original polygon and its copy. Triangle T is the only one that does not have a vertical side. The perimeter of one polygon and the ratio of the corresponding side lengths are given. Possible responses The areas are equal. Find the values of x. b. Each angle in Polygon 1 also has a corresponding angle in Polygon 2. Find the missing length of each side marked with ? Lin and Andre used different methods to find the area of a regular hexagon with 6-inch sides. Explain your reasoning. For example, point Open Up Resources 6-8 Math is published as an Open Educational Resource. Please submit your feedback or enquiries via our Feedback page. Classify the polygon shown at the right by the number of sides. in the first triangle corresponds to point 2. Figure B has the same number of angles as Figure A. A number you use to multiply all the lengths of the sides in the original figure by to generate a larger or smaller figure . Polygon B is a scaled copy of Polygon A. Calculate the areas of regular polygons using the formula ½(ap). . And a regular polygon is one that is both equilateral (all sides are congruent) and equiangular (all angles are congruent). List all the triangles that are scaled copies in the table. E AC Explain or show your reasoning. Answer: 1) The conjugate for is . Figure B has the same number of edges as Figure A. Explain or show your reasoning. Hence, the height of any one triangle, as shown by the blue dashed line, is 10.4 in ÷ 2 = 5.2 in. corresponds to segment What scale factor takes the original polygon to its smaller copy? Select all of the statements that must be true: JKL B 4 in. Choose one of the triangles that is not a scaled copy of Triangle O. H Select all of the statements that must be true: What is the scale factor from Polygon A to Polygon B? 2. The area of one triangle is ½ × 6 in × 5.2 in = 15.6 sq in. If it is a polygon, tell whether it is convex or concave. The figure is not a polygon because two of the sides intersect only one other side. EXAMPLE 1 Identify Polygons Show one pair of corresponding points and two pairs of corresponding sides in the original polygon and its copy. Drag and turn the moveable angle tool to compare the angles in the copies with the angles in the original. C: ½ × 4 units × 6 units = 12 sq units. The lengths (in feet) of … The larger figure is a scaled copy of the smaller figure. As the number of sides increases, the apothem gets closer and closer to the radius of the circle. Here is a picture with some points labeled and two copies of the picture. Explain. Explain your reasoning. Sample explanation: The sides that are 4 units long in the original polygon are 1 unit long in the copy, which is one fourth of the original length. Polygon B is a scaled copy of Polygon A. Each point in Polygon 1 has a corresponding point in Polygon 2. b. Complete this table to show corresponding parts in the three pictures. Solution 1. . is the same as the measure of angle For each of your assigned triangles, is it a scaled copy of Triangle O? What scale factor takes the original polygon to its smaller copy? 2. The area of the rectangle is 6 in × 10.4 in = 62.4 in. Explain or show your reasoning. 8. 304 Chapter 6 Quadrilaterals Decide whether the figure is a polygon. No. Explain your reasoning. Problem 2 Figure B is a scaled copy of Figure A. Determine the measure of each angle marked with ? 4. corresponds to point C Explain or show your reasoning. . Can the area of the trapezoid be exactly twice the area of the triangle? Segment Label the base and height of each triangle. 4 \boldcdot 1.5 = 6 Rearrange the triangles from Figure C so they fit inside Figure D. Draw and color a diagram of your work. Describe how you could change at least one side to make a scaled copy, while leaving at least one side unchanged. Explain or show your reasoning. Notice that in both methods, you will have to deduce the heights of the triangles from the information given. The larger figure is a scaled copy of the smaller figure. Explain your reasoning. 1. A minimum of three line segments is required to connect end to end, to make a closed figure. Your teacher will assign you two of the triangles to look at. DEF Both methods, if done correctly, will give the same answer. Explain your reasoning. Find the missing length of each side marked with ? It is composed of line segments. problem and check your answer with the step-by-step explanations. Embedded content, if any, are copyrights of their respective owners. If it is a polygon, tell whether it is convex or concave. perimeter of larger polygon: $85 \mathrm{m} ;$ ratio: $\frac{2}{3}$ Consider using colored pencils to highlight corresponding parts or labeling some of the vertices. 3) Rotate segment AC 180° around point D. 4) Rotate segment AC 180° around point B. 8. AF 2.1 Conditional Statements 2.2 Inductive and Deductive Reasoning 2.3 Postulates and Diagrams 2.4 Algebraic Reasoning 2.5 Proving Statements about Segments and Angles 2.6 Proving Geometric … Show one pair of corresponding points and two pairs of corresponding sides in the original polygon and its copy. The figure is not a polygon because it has a side that is not a segment. For problems 4-6, classify the polygon by the number of sides. when you apply one transformation to a figure and then apply another transformation to its image, the resulting transformation is a composition of transformation ... when you use deductive reasoning, your establishing that if a set of properties is accepted as true, something else must be true. in Polygon A. 3. What scale factor takes the original polygon to its smaller copy? Is either copy a scaled copy of the original road sign? corresponds to point A non polygon can have curved sides. in Polygon B. Line segments are always straight. Find the area of the triangle. Try to construct some other regular polygons with this method. Find the perimeter of the other polygon. Check by finding the area of each figure. 5. What scale factor takes the original polygon to its smaller copy? Tell whether the figure is a polygon. Here are two quadrilaterals. Andre wants to make a scaled copy of Jada's drawing so the side that corresponds to 4 units in Jada’s polygon is 8 units in his scaled copy. If IK=5, how long is the corresponding distance in the first figure? Lin's method: The six triangles are equilateral, so all three sides of any one triangle measure 6 in. Tell whether the polygon is equilateral, equiangularr or regular. In geometry, a figure that lies in a plane is called a plane figure. Game Review What you learned in previous grades & Plot the ordered pair in a coordinate plane. Classify the polygon by the number of sides. On a coordin… Get the answers you need, now! 1. . The area of this triangle is ½ × 11 units × 2 units = 11 square units. Figure C, square with side length = 5 centimeters. Predict which figure has the greatest area and which has the least area. 8. Can the same process be used to find the measure of one angle of an irregular polygon? If it Is not, explain why. Consider using colored pencils to highlight corresponding parts or labeling some of the vertices. In this example, the scale factor is 1.5, because  A polygon has straight sides. The figure is a polygon formed by four straight sides. 62/87,21 The cost for delivered items will be proportional if all of the items cost the same amount. If IK = 5, how long is the corresponding distance in the first figure? Angles are generally measured using degrees or radians. To create a scaled copy, we multiply all the lengths in the original figure by the same number. Tell whether the figure is a polygon. Explain or show your reasoning. 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