Solve Equations Involving Sum of the Angles of a Triangle

How many degrees is X?

• 37

• 47

• 7

• 90

What is the value of angle b?

Which equation would solve for x?

• x + 38 = 90

• x + 38 = 180

• x = 90

• x = 38 + 90

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

• A) 60°

• B) 80°

• C) 90°

• D) 100°

Find the value of the unknown.

• 27°

• 153

• 76.5°

• 77°

Find the value of the unknown.

• 68.5°

• 137°

• 94°

• 43°

Find the value of the unknown.

• 132°

• 109°

• 23°

• 48°

• A) 80°

• B) 90°

• C) 180°

• D) 260°

Set up an equation to find x.

• 42 + 8x = 2 + 12x

• 2 + 12x + 42 = 8x

• 42 + 8x + 2 + 12x = 180

• 42 + 8x = 180