Similar vs. Congruent Triangles

Sides in similar figures must be proportional.  

• True

• False 

Determine the relationship of the figures.

• Congruent

• Not Congruent

• Similar

What is true for similar triangles?

• Same shape and same size always

• Corresponding sides are always congruent

• Corresponding angles are always congruent

• One must be smaller than the other always

Are the triangles similar?

• Yes

• No

• 15
• 13
• 11
• 17

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?

• 144 feet

• 72 feet

• 36 feet

∠A ≅∠?

• ∠B

• ∠E

• ∠D

• ∠F

Choose the correct item to make the congruence statement true.

• A

• B

• C

• D

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

• 3.75

• 9.75

• 10

• 12

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

• x = 1

• x = 3

• x = 9

• x = 5