Interior Exterior Theorem Triangles

Solve for x

• 49

• 58

• 70

• 94

Find the measure of the missing angles.

• A

• B

• C

• D

Solve for the missing angle with the question mark. 

• A

• B

• C

• D

Which of the following terms best describes Angles a and b?

• Remote interior angles

• Corresponding angles

• Exterior angles

• Interior angles

Two interior angles that are not adjacent (not touching) to the exterior angle of a triangle.

• Interior angles

• Exterior angles

• Remote interior angles

• Adjacent Angle

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

• Exterior Angle Theorem

• Angle Angle Criteria (AA)

• Angle, Side, Angle Theorem (ASA)

• SIde, Side, Side Theorem (SSS)

An angle formed by extending one of the sides of a triangle.

• Interior Angle

• Exterior Angle

• Remote Interior Angle

• Extended Angle

The sum of the angle measures of a triangle is 180° 
m∠A + m∠B + m∠C = 180°

• Triangle Sum Theorem

• Exterior Angle Theorem

• Third Angle Theorem

• Centroid Theorem

The measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.
m∠4 = m∠1 + m∠2

• Triangle Sum Theorem

• Exterior Angle Theorem

• Third Angles Theorem

• Congruent Triangles Theorem