GEO Unit 7

The pair of figures is similar. Find the missing side.

• x = 20
• x = 12
• x = 5
• x = 4

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75
• 9.75
• 10
• 12

What is the measure of x?

• 12
• 15
• 6
• 9

The triangles are similar, solve for the question mark.

• 8
• 12.5
• 18
• 24

Find the height of the person using what you know about similar triangles.

• 4 ft
• 6.25 ft
• 1.25 ft
• 5.75 ft

• 20
• 30
• 25
• 23

Are the triangles similar?

• Yes
• No

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.

Sides in similar figures must be proportional.  

• True
• False 

The 2 shapes are similar. Find x.

• 2

• 7

• 0.5

• 12