dodgeball $$$$???

Pre-Algebra

7-6 Similar Figures

Dodgeball $$$$???

Pre-Algebra

7-6 Similar Figures

Warm UpSolve each proportion.

Pre-Algebra

7-6 Similar Figures

b30

39

=1. 5635

y5

=2.

412

p9

=3. 56m

2826

=4.

b = 10 y = 8

p = 3 m = 52

Pre-Algebra

7-6 Similar Figures

Congruent figures have the same size and shape. Similar figures have the same shape, but not necessarily the same size.

The ratio formed by the corresponding sides is the scale factor.

Pre-Algebra

7-6 Similar Figures

The following are matching, or corresponding:A and X

Remember!

AB and XY

BC and YZ

AC and XZ

A

C BZ Y

X

C and Z

B and Y

Pre-Algebra

7-6 Similar Figures

Additional Example 3: Identifying Similar Figures

Which rectangles are similar?

Since the three figures are all rectangles, all the angles are right angles. So the corresponding angles are congruent.

Pre-Algebra

7-6 Similar Figures

Try This: Example 3

Which rectangles are similar?

A8 ft

4 ft

B6 ft

3 ft

C5 ft

2 ft

Since the three figures are all rectangles, all the angles are right angles. So the corresponding angles are congruent.

Pre-Algebra

7-6 Similar Figures

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Pre-Algebra

7-6 Similar Figures

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