Finding the missing angles of Triangles and Quadrilaterals

Front

What is the sum of the angles inside a triangle?

Back

180 degrees.

Front

If two angles of a triangle are 30 and 70 degrees, what is the measure of the third angle?

Back

80 degrees.

Front

Find the measure of the indicated angle if the options are 95, 85, 35, 45 and the answer is 45.

Back

45 degrees.

Front

Find the missing angle if the options are 30, 60, 90, 120 and the answer is 60.

Back

60 degrees.

Front

What is the measure of the missing angle if the options are 140, 130, 50, 90 and the answer is 50?

Back

50 degrees.

Front

What is a triangle?

Back

A polygon with three edges and three vertices.

Front

What is a quadrilateral?

Back

A polygon with four edges and four vertices.

Front

What is the sum of the angles inside a quadrilateral?

Back

360 degrees.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

How do you find the missing angle in a quadrilateral?

Back

Subtract the sum of the known angles from 360 degrees.