Geometry: Intro to Similarity & Congruence (FormativeAssessment)

What are similar triangles?

• Triangles that have the same size but not necessarily the same shape.
• Triangles that have the same shape but not necessarily the same size.
• Triangles that have both the same shape and size.
• Triangles that have neither the same shape nor size.

Tags

G.GSR.5

What are congruent triangles?

• Triangles that have the same shape and size.
• Triangles that have the same size but different shapes.
• Triangles that have the same shape but different sizes.
• Triangles that have the same shape but different angles.

If two triangles are congruent, what can you say about their corresponding angles and sides?

• Their corresponding angles are equal but sides are not equal.
• Their corresponding angles and sides are not equal.
• Their corresponding sides are equal but angles are not equal.
• Their corresponding angles and sides are equal.

If two triangles are similar, what can you say about their corresponding angles and sides?

• Their corresponding angles are equal and their corresponding sides are proportional.
• Their corresponding angles are equal and their corresponding sides are not proportional.
• Their corresponding angles are not equal and their corresponding sides are not proportional.
• Their corresponding angles are not equal and their corresponding sides are proportional.

Find the missing length.

Find the missing length.

• 18
• 24
• 30
• 36

Are the two triangles similar? If so, choose a correct similarity statement.

• Similar; DQR ~ DEF
• Similar; QRD ~ FED
• Not similar or not enough information
• Similar; DFE ~ DQR

Solve for x.

• 9
• 12
• 3
• 6

Solve for x.

Find the missing length indicated.

• 6
• 8
• 10
• 12