Angles in Triangles

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°

• 90°

• 180°

• 360°

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Find the measure of the indicated angle. 

• 95

• 85

• 35

• 45

Solve for x.

• 16

• 11

• 50

• 6

Match the following

• 2

• m<FGE

• 60 degrees

• x

• 94 degrees

• m<KEJ

• 30 degrees

• m<EFG

• 13 degrees

• m<KGJ

Solve for x THEN find the degrees for angle A.

• 44^o

• 96^o

• -14^o

• 63^o

Find x.

• 75 degrees

• 45 degrees

• 15 degrees

• 30 degrees

Two interior angles of a triangle measure 34 degrees and 38 degrees. What is the third interior angle of the triangle?

• 108^o

• 72^o

• 2^o

• 23^o

Which equation can be created to solve for the value of x in the triangle?

Answer explanation

The sum of the angles should add up to 180 degrees! Add the three sides together and set the equation equal to 180!

Write an equation to find the value of x in the triangle. Find the value of x. Find the measurement of angle A.