Understanding similarity

Find the value of x. Assume the quadrilaterals are similar.

• 8

• 9

• 10

• 12

Triangle PQR is similar to triangle XYZ.
What is the length of line segment XZ?

• 11 in.
• 13.5 in.
• 9 in.
• 20.25 in.

Determine if the triangles are similar. If not, explain why not.

• no, b=110

• no, b=40

• yes

• no, a=30

Look at the two triangle in the picture. The two triangles are similar. Select the correct similarity statement.

Find side length X.

• 30
• 25
• 15
• 40

These two triangles are similar to each other. What is measure is angle Y?

Mathematical Equivalence

ON

Which proportion could be used to find side 'x'?

• 
• 
• 
• 

Do these 2 figures have Similarity?

• True

• False

Tell whether the triangles are similar. Explain.

• Yes because x = 31

• Yes because the triangles have one congruent angle

• No because x = 31, which means the triangles only have one congruent angle.

• They are both purple

Solve for the missing angles to determine if the two triangles are similar.

• Yes, they are similar
• No, they are not similar