Solving for a missing angle in two different ways ex 7

The video tutorial explains how to find a missing angle in a triangle using the properties of exterior and interior angles. It covers the triangle sum theorem and demonstrates two methods to solve for the missing angle. The tutorial emphasizes the relationship between exterior angles and the sum of opposite interior angles, providing a step-by-step guide to calculate the missing angle using known values.

What is the sum of all angles in a triangle?

• 180 degrees

• 90 degrees

• 360 degrees

• 270 degrees

If an exterior angle of a triangle is 119 degrees, what is the sum of the two opposite interior angles?

• 61 degrees

• 90 degrees

• 180 degrees

• 119 degrees

How do you calculate the measure of an interior angle if you know the exterior angle is 119 degrees?

• Subtract 119 from 180

• Divide 119 by 2

• Multiply 119 by 2

• Add 119 to 180

What is the measure of angle 1 if the other two angles in the triangle are 61 degrees and 90 degrees?

• 61 degrees

• 29 degrees

• 119 degrees

• 90 degrees

Which property states that the exterior angle is equal to the sum of the two opposite interior angles?

• Supplementary Angle Theorem

• Exterior Angle Theorem

• Pythagorean Theorem

• Triangle Sum Theorem