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Here is a portrait of a student.
Look at Portraits A–E. How is each one the same as or different from the original portrait of the student?
Your teacher will give you a set of cards that have polygons drawn on a grid. Mix up the cards and place them all face up.
Select one pair of polygons to examine further. Explain or show how you know that one polygon is a scaled copy of the other. You can draw both polygons on the grid if it helps.
What is a scaled copy of a figure? Let’s look at some examples.
The second and third drawings are both scaled copies of the original Y.
However, here, the second and third drawings are not scaled copies of the original W.
3 drawings of the letter W. The second drawing is spread out making it wider and shorter than the first drawing. The third drawing is squished in, making it narrower, but the same height as the the original drawing.
The second drawing is spread out (wider and shorter). The third drawing is squished in (narrower, but the same height).
We will learn more about what it means for one figure to be a scaled copy of another in upcoming lessons.
A scaled copy is a copy of a figure where every side length in the original figure is multiplied by the same number.
Triangle
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Here is an original drawing of the letter F and some other drawings.