Geometry Similar Shapes

Front

What are similar shapes?

Back

Shapes that have the same shape but not necessarily the same size.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is a scale factor?

Back

A ratio/number that compares the sizes of the parts of the scale drawings.

Front

If two triangles are similar, what can be said about their corresponding sides?

Back

All corresponding sides are proportional (same ratio).

Front

Find the missing side if the sides of two similar triangles are in the ratio 3:5 and one side of the smaller triangle is 9. What is the corresponding side in the larger triangle?

Back

15

Front

If triangle ABC is similar to triangle DEF, and the length of side AB is 6 and side DE is 9, what is the scale factor from triangle ABC to triangle DEF?

Back

3:2

Front

If the scale factor of two similar figures is 4:1, what does this mean for their areas?

Back

The area of the larger figure is 16 times the area of the smaller figure.

Front

What is the relationship between the angles of similar figures?

Back

All corresponding angles are equal.

Front

If two similar rectangles have a scale factor of 2:3, and the length of the smaller rectangle is 4, what is the length of the larger rectangle?

Back

6.

Front

Find the missing side x if triangle GHI is similar to triangle JKL and the sides are in the ratio 2:5. If side GH = 8, what is side JK?

Back

20.