Angle Sum and Triangle Properties

This video tutorial explains how to find missing angles in triangles and quadrilaterals. It covers the fundamental facts that angles in a triangle sum to 180 degrees and angles in a quadrilateral sum to 360 degrees. The tutorial provides examples of calculating missing angles in various types of triangles, including right and isosceles triangles, and in quadrilaterals. It also includes practice problems for viewers to solve.

What is the sum of angles in any triangle?

• 180 degrees

• 360 degrees

• 90 degrees

• 270 degrees

What is the sum of angles in any quadrilateral?

• 180 degrees

• 90 degrees

• 360 degrees

• 270 degrees

What is the sum of angles in a rectangle?

• 360 degrees

• 270 degrees

• 450 degrees

• 180 degrees

What is the sum of angles in a square?

• 360 degrees

• 270 degrees

• 450 degrees

• 180 degrees

What is the sum of angles in a parallelogram?

• 180 degrees

• 270 degrees

• 360 degrees

• 450 degrees

What is the sum of angles in a rhombus?

• 180 degrees

• 270 degrees

• 360 degrees

• 450 degrees

If two angles in a triangle are 60 degrees and 80 degrees, what is the third angle?

• 40 degrees

• 50 degrees

• 60 degrees

• 30 degrees

If a triangle has angles of 50 degrees and 60 degrees, what is the third angle?

• 100 degrees

• 90 degrees

• 80 degrees

• 70 degrees

In a triangle, if one angle is 30 degrees and another is 60 degrees, what is the third angle?

• 60 degrees

• 70 degrees

• 80 degrees

• 90 degrees

In a triangle, if one angle is 90 degrees and another is 45 degrees, what is the third angle?

• 90 degrees

• 60 degrees

• 30 degrees

• 45 degrees