Geometry of Flat Shapes

What is the formula for the area of a rectangle?

• Area = length ÷ width

• Area = 2 × (length + width)

• Area = length × width

• Area = length + width

How many sides does a triangle have?

• 5

• 3

• 4

• 2

What do you call a shape with four equal sides?

• Triangle

• Circle

• Rectangle

• Square

What is the perimeter of a square with a side length of 5 cm?

• 25 cm

• 20 cm

• 15 cm

• 10 cm

Name a shape that has no sides.

• circle

• triangle

• rectangle

• square

What is the area of a circle with a radius of 3 cm?

• 28.26 cm²

• 12.56 cm²

• 31.42 cm²

• 18.84 cm²

How many degrees are in a right angle?

• 90 degrees

• 45 degrees

• 360 degrees

• 180 degrees

What do you call a polygon with eight sides?

• hexagon

• decagon

• octagon

• pentagon

What is the formula for the area of a triangle?

• Area = base + height

• Area = 2 * base * height

• Area = 1/2 * base * height

• Area = base * height

How many lines of symmetry does a rectangle have?

• 4

• 2

• 1

• 3