Triangle Review

How many sides does a triangle have?

• 3

• 7

• 2

• 5

When calculating the angles of a triangle, the two shortest sides when added together must be _________ the longest side.

The sum of the three sides of a triangle is equal to ______ degrees.

If a triangle has angle measures of 40 and 56, what is the measure of the third angle?

• 96

• 16

• 84

• 86

In a right triangle, one of the angles has to be (a)  

• 90

• 180

• 60

• 45

Two angles in a triangle measure 30° and 105°. What is the measure of the third angle in the triangle?

• 45°

• 65°

• 75°

• 105°

Determine if the three lengths can be the measurements of the sides of a triangle.

Side 1 = 32 inches

Side 2 = 11 inches

Side 3 = 19 inches

• Yes, this is a triangle.

• No, this is not a triangle.