Finding Missing Side Lengths with Given Perimeters

Front

What is a regular pentagon?

Back

A shape with five sides of equal length.

Front

If a shape's perimeter is 32 meters and two sides are 11 meters each, what is the total length of the remaining two sides?

Back

10 meters.

Front

What does it mean if a shape has a 'missing side'?

Back

One side's length is not known.

Front

If a rectangle has a perimeter of 24 cm and one side is 6 cm, what could be the length of the opposite side?

Back

6 cm.

Front

If the perimeter of a square is 20 cm, what is the length of one side?

Back

5 cm.

Front

What is perimeter?

Back

The total distance around a shape.

Front

How do you find the perimeter of a rectangle?

Back

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

Front

What is the formula for the perimeter of a square?

Back

P = 4 × side length.

Front

If a triangle has a perimeter of 30 cm and two sides are 10 cm and 8 cm, what is the length of the third side?

Back

12 cm.

Front

What is a side length?

Back

The measurement of one edge of a shape.