Angle and Perimeter RETEACHING

Front

What is the definition of perimeter?

Back

The perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides or use the formula: P = 2(length + width).

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and vertex but do not overlap.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect; they are always congruent.

Front

What does it mean for angles to be supplementary?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

If angle 5 is 70 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 110 degrees (180 - 70 = 110).

Front

What is the formula for finding the perimeter of a triangle?

Back

Add the lengths of all three sides: P = side1 + side2 + side3.

Front

What is the measure of a straight angle?

Back

A straight angle measures 180 degrees.