Warmup
Activity #1
Draw Scaled Copies of a Figure.
Activity #2
Draw More Scaled Copies of a Figure.
Diego and Jada want to scale the polygon below so the side that corresponds to 15 units in the original is 5 units in the scaled copy. They each use a different operation to find the new side lengths. Their finished drawings are found below.
(2.) Choose the correct answers below.
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. Andre says “I wonder if I should add 4 units to the lengths of all of the segments?”
(4.) What would you say in response to Andre? Explain or show your reasoning.
The side lengths of Triangle B are all 5 more than the side lengths of Triangle A. Can Triangle B be a scaled copy of Triangle A? Explain your reasoning.
Activity #3
Draw More Scaled Copies of a Figure.
(1.) Quadrilateral A has side lengths 6, 9, 9, and 12. Quadrilateral B is a scaled copy of Quadrilateral A, with its shortest side of length 2.
Challenge #1
Here below is a polygon on a grid.
(1.) Draw a scaled copy of the polygon in the applet above, that has a perimeter of 30 units.
Challenge #2
Priya and Tyler are discussing the figures shown below. Priya thinks that B, C, and D are scaled copies of A. Tyler says B and D are scaled copies of A.
Challenge #3
Quiz Time