Basic Geometry Vocab & Formulas

What is perimeter?

• The amount of space inside a 2-D object.

• The amount of space inside a 3-D object.

• The distance around a 2-D shape.

• The distance around a 3-D shape.

• The amount of space covering a 3-D shape.

What is area?

• The amount of space inside a 2-D object.

• The amount of space inside a 3-D object.

• The distance around a 2-D shape.

• The distance around a 3-D shape.

• The amount of space covering a 3-D shape.

What is surface area?

• The amount of space inside a 2-D object.

• The amount of space inside a 3-D object.

• The distance around a 2-D shape.

• The distance around a 3-D shape.

• The amount of space covering a 3-D shape.

What is volume?

• The amount of space inside a 2-D object.

• The amount of space inside a 3-D object.

• The distance around a 2-D shape.

• The distance around a 3-D shape.

• The amount of space covering a 3-D shape.

How do you find the perimeter?

• add up all of the sides

• length x width x height

• length x width

How do you find the area of a triangle?

• add up all of the sides

• length x width x height

• length x width

To find the area of a triangle, how do you know which measurements are the length and width?

• They form a right angle.

• The number on the bottom is the width and the one on the side is the length.

• You can use any two of the numbers given as length and width.

How do you find the area of a rectangle?

• (2 x length) + (2 x width)

• length x width x height

• length x width

How do you find the perimeter of a rectangle?

• (2 x length) + (2 x width)

• add up all of the sides

• 2(length + width)

• length x width

What is the term for the distance around a circle?

• diameter

• pi

• circumference

• radius