Today in class students learned about scale factors, and how to tell if shapes that have corresponding parts are actually scaled copies.
Answers to HW: 1a. We can share the pair of corresponding points and pairs of lines we chose with our groups at the beginning of class tomorrow. b. Scale factor is how much the original is multiplied by to create the scaled copy. If you multiply the original by 1/4 or 0.25, you get the scaled copy. Count the square units and prove the math for yourself. 2. Statements B, D, and E MUST be true. 3. a. the scale factor is 2 because the top of A(2.5) corresponds to the top of B (5). b. Using a scale factor of 2 means you multiply each corresponding side on figure A to find out the sides of B...on the left side it measures 3, and on the right side is 5 c. The corresponding angles are also 53 degrees and 82 degrees because the figures are scaled copies of each other. 4. a. 5 b. 32 c. 3 d. 14 e. 1/3
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October 2018
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