Geometry Vocabulary

What is the name of a three-sided polygon?

• Triangle

• Square

• Circle

• Rectangle

How many degrees are in a right angle?

• 45 degrees

• 180 degrees

• 90 degrees

• 270 degrees

What do we call two lines that never meet?

• Parallel lines

• Curved lines

• Diagonal lines

• Intersecting lines

What is the distance around a circle called?

• Radius

• Diameter

• Perimeter

• Circumference

What is the formula to calculate the area of a rectangle?

• Area = Length x Width

• Area = Length / Width

• Area = Length + Width

• Area = 2 x (Length + Width)

How many sides does a hexagon have?

• 8

• 10

• 6

• 4

What is the name of a polygon with five sides?

• hexagon

• octagon

• decagon

• pentagon

What is the point where two sides of a polygon meet called?

• corner

• vertex

• edge

• junction

What is the formula to calculate the circumference of a circle?

• π * r

• r^2

• 2 * r

• 2 * π * r

What is the perimeter of a square with sides of length 5 units?

• 20 units

• 10 units

• 25 units

• 15 units