This video tutorial explains how to find the missing angle of a triangle using basic properties of triangles. It covers the interior angle sum theorem, which states that the sum of angles in a triangle is 180 degrees, and demonstrates how to use this theorem to find a missing angle. The video also discusses properties of isosceles triangles, showing how to calculate unknown angles when two sides are equal. The tutorial aims to provide foundational knowledge that can be applied to more complex problems.

What is the sum of all interior angles in any triangle?

• 360 degrees

• 90 degrees

• 180 degrees

• 270 degrees

If two angles in a triangle are 58 degrees and 42 degrees, what is the measure of the third angle?

• 80 degrees

• 120 degrees

• 90 degrees

• 100 degrees

How do you find the missing angle in a triangle if two angles are known?

• Add the two known angles and subtract from 360

• Divide the two known angles

• Add the two known angles and subtract from 180

• Multiply the two known angles

In an isosceles triangle, if one angle is 132 degrees, what is the measure of each of the other two angles?

• 24 degrees

• 48 degrees

• 74 degrees

• 132 degrees

What property of isosceles triangles helps in finding missing angles?

• Two sides are equal

• All angles are equal

• All sides are equal

• No sides are equal