EDM: Unit 4

Front

What is a rectangle?

Back

A rectangle is a shape with four sides and four right angles. Opposite sides are equal in length.

Front

What does perimeter mean?

Back

Perimeter is the total distance around 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 area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

How do you calculate the area of a rectangle?

Back

Multiply the length by the width: Area = length x width.

Front

What units can be used to measure length?

Back

Common units include inches, feet, and yards.

Front

What is the difference between inches, feet, and yards?

Back

Inches are smaller than feet, and feet are smaller than yards. 12 inches = 1 foot, 3 feet = 1 yard.

Front

What is a square unit?

Back

A square unit is a unit of area that is one unit long and one unit wide.

Front

If a rectangle is 3 units long and 5 units wide, what is its area?

Back

Area = 3 x 5 = 15 square units.

Front

If a rectangle has a perimeter of 18 units, what could its dimensions be?

Back

Possible dimensions could be 4 units by 5 units.