Similar triangles

Are the two triangles similar? How do you know?

• yes, AA

• yes, SSS

• yes, SAS

• No

The 2 shapes are similar. Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

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.

State whether the triangles are similar. If so, write a similarity statement and the postulate or theorem you used.

State if the triangles in each pair are similar. If so, state how you know they are similar.

• Yes, AA Similarity

• Yes, SSS Similarity

• Yes, SAS Similarity

• Not Similar

If the triangles are similar, state how.

• SSS

• SAS

• AA

• Not similar.

State the postulate that proves these triangles are similar and identify the similarity statement.

• SSS
• AA
• SAS

Find the value of x.

• 72

• 18

• 60

• 7.5

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

• AA

• SAS

• SSS

• Not Similar

Find the value of x.

• x= 40

• x= 1600

• x= 25.6

• x= 44