8.1 Similar Triangles

If two triangles are similar their angles are______.

• proportional

• congruent

• supplementary

• complementary

If two triangles are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

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.

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 
• proportional, congruent 
• congruent, congruent
• proportional, proportional

Complete each proportion.
CB / DM  =  AC / ?

• BM
• MA
• BC
• AD

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

If the two triangles are similar, what is the measurement of x?

• 2 ft

• 3 ft

• 4 ft

• 6 ft

Complete each proportion.

AB / AM = ? / AD

• BC

• AC

• MD

• MC

What is the scale factor from ΔABC to ΔXYZ?

• 1.25

• 1.5

• 2

• 2.5

If the two triangles are similar, what is the measurement of x?

• 3

• 1.5

• 8

• 2/3=0.667