7th grade retake Flashcard 14

Front

What is the measure of a right angle?

Back

90 degrees.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the definition of vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is the formula for the area of a circle?

Back

Area = π × radius².

Front

What is the definition of circumference?

Back

The distance around a circle.

Front

What is the relationship between adjacent angles?

Back

Adjacent angles share a common side and vertex.