Similarity and Parallel Lines

QR is a midsegment of triangle WUV. What is the length of segment QR?

• 4

• 8

• 16

• 32

QR is a midsegment of triangle BCD. Solve for the value of x.

• 11

• 18

• 9

• -7

What do the arrows on these triangles represent?

• Perpendicular lines

• Parallel lines

• Transversals

• Congruent

• x = 10, y = 8

• x = 7.5, y = 10

• x = 10, y = 7.5

• x = 8, y = 10

Which of the following would you use to prove the two triangles are similar?

• SAS

• SSS

• AA

Are the two triangles similar? If so, how?

• Yes, AA

• Yes, SAS

• No

• Yes, SSS

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

• AA

• SSS

• SAS

• Not similar

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

• SAS

• AA

• SSS

• not similar

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor from ΔABC to ΔXYZ?

• 1.25

• 1.5

• 2

• 2.5