Side Length Relationship in Triangles

What type of triangle is formed with side lengths of 7 yards, 4.25 yards, and 6.5 yards?

• acute

• obtuse

• right

• none

Isabella has sticks that are 10cm, 11cm, and 13cm long.  Can she place the sticks together to form a right triangle?  Justify your answer.

• No, because 10+11 does not equal 13

• No, because 100+121 does not equal 169

• Yes, because there is a small side, medium side and long side

• Yes, because a triangle has 3 sides

Find missing side

• 5

• 7

• 9

• 11

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ

• ΔNOM ∼ ΔPQL

• ΔLMN ∼ ΔPQO

• ΔMLN ∼ ΔPQO

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

Determine whether the triangles are similar.

• SSS~

• AA~

• SAS~

• not similar

The triangles below are similar. Find the missing side length.

• x = 30

• x = 333

• x = 10.8

The triangles below are similar. Find x.

• x = 42

• x = 14

• x = 12

• x = 144

Find the missing length.

• 36

• 64

• 10

• 100

State if the triangles are congruent. If they are, state how you know.

• SAS

• ASA

• AAS

• Not Congruent