Similarity: Unit 11 Review

What does similar mean?

• corresponding sides are proportional and corresponding angles are congruent

• corresponding sides and angles are congruent

• same shape

• neither sides or angles are congruent

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

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

Solve the proportion.

• 20
• 7
• 22
• 11

The two right triangles below are similar. What is x?

• 3.75

• 9.75

• 10

• 12

The red triangle has been dilated by a scale factor of 1/4, which triangle is the new image? 

• green triangle 

• red triangle 

• black triangle

• none of these 

The pair of figures is similar. Find the value of x.

• x = 12

• x = 3

• x = 40

• x = 4

Find x

• 4 ft

• 15 ft

• 18 ft

• 2 ft

Find y.

• 144
• 18
• 72
• 12

Triangle ABC is similar to triangle XYZ.  What is the length of line segment BC?

• 5 cm
• 7.5 cm
• 8 cm
• 9 cm

This symbol stands for ...

• is corresponding to
• is proportional to
• is congruent to
• is similar to