Year 7 Geometry (mid-topic)

Front

What is the sum of the interior angles of a triangle?

Back

180º

Front

What is a scalene triangle?

Back

A triangle with three different side lengths.

Front

What is an acute angle?

Back

An angle that measures less than 90º.

Front

What is a right angle?

Back

An angle that measures exactly 90º.

Front

What is an obtuse angle?

Back

An angle that measures more than 90º but less than 180º.

Front

How do you find the measure of an unknown angle in a triangle?

Back

Subtract the sum of the known angles from 180º.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90º.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180º.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is a right triangle?

Back

A triangle that has one right angle.