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Similar Shapes Exploration

This worksheet helps 8th-grade students understand and identify similar shapes, focusing on properties like corresponding angles and proportional side lengths.

Grade 8 Math GeometrySimilar Shapes
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Includes

Multiple Choice3 Short AnswerFill in the BlanksTrue / False

Standards

CCSS.MATH.CONTENT.8.G.A.4

Topics

mathgeometrysimilar shapesgrade 8
8 sections · Free to use · Printable
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Similar Shapes Exploration

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Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.

1. Which statement is true about similar shapes?

a

They have the same size and shape.

b

They have the same shape but different sizes.

c

They have different shapes but the same size.

d

They have different shapes and different sizes.

2. If two triangles are similar, their corresponding angles are:

a

Congruent

b

Proportional

c

Complementary

d

Supplementary

3. Consider the two rectangles below. Are they similar? Explain your reasoning.

10 cm5 cm
15 cm7.5 cm

4. For two shapes to be similar, their corresponding angles must be  , and their corresponding sides must be  .

5. The ratio of corresponding side lengths in similar figures is called the   factor.

6. Triangle ABC has side lengths 6 cm, 8 cm, and 10 cm. Triangle DEF is similar to ABC and its shortest side is 9 cm. What are the lengths of the other two sides of Triangle DEF?

7. All squares are similar to each other.

T

True

F

False

8. All rectangles are similar to each other.

T

True

F

False

9. The two triangles shown below are similar. Find the length of the missing side 'x'.

108
15x