Similar Triangles and Proportional Lengths

What is the ratio of the side lengths?

• 25

• 1.5

• 2

• 2.5

What does it mean for two shapes to be similar?

• Same shape, but different size.

• Same size and same shape.

• Their angles add up to 180^o.

• They are congruent.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Determine the relationship of the figures.

• Congruent

• Not Congruent

• Similar

Tags

CCSS.HSG.CO.B.7

Sides in similar figures must be proportional.  

• True

• False 

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Are triangle ABC and triangle DEF similar?

• No

• Yes

Tags

CCSS.HSG.SRT.A.2

All angles in similar figures are congruent.  

• True

• False

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Are the triangles similar?

• Yes

• No

Tags

CCSS.HSG.SRT.A.2

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Tags

CCSS.HSG.SRT.A.2

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Tags

CCSS.HSG.SRT.A.2