Flat Shapes Challenge

What is the perimeter of a rectangle with length 5 cm and width 3 cm?

• 16 cm

• 18 cm

• 14 cm

• 12 cm

Identify the shape that has three sides.

• Pentagon

• Triangle

• Hexagon

• Square

Draw a square and label its sides.

• A triangle with sides labeled 1, 2, and 3.

• A rectangle with sides labeled A and B.

• A circle with a radius labeled R.

• A square with sides labeled A, B, C, and D.

What are the properties of a triangle?

• A triangle has three sides, three angles, the sum of interior angles is 180 degrees, and satisfies the triangle inequality theorem.

• A triangle has four sides and four angles.

• The sum of interior angles in a triangle is 360 degrees.

• A triangle can have any number of sides as long as it is closed.

Calculate the perimeter of a triangle with sides 4 cm, 5 cm, and 6 cm.

• 12 cm

• 10 cm

• 15 cm

• 18 cm

Which shape has four equal sides and four right angles?

• Rhombus

• Rectangle

• Square

• Trapezoid

Draw a circle and mark its radius.

• Draw a triangle and mark its height.

• Draw a square and mark its diagonal.

• Draw a circle and label its diameter.

• Draw a circle and mark a line from the center to the edge as the radius.

Explain the difference between a square and a rectangle.

• A square can only be a rectangle if it has different side lengths.

• A square has all sides equal, while a rectangle has opposite sides equal.

• A rectangle has all sides equal, while a square has unequal sides.

• A square has four sides, while a rectangle has three sides.

What is the perimeter of a circle called?

• Area

• Radius

• Diameter

• Circumference

Name a shape that has no corners.

• Circle

• Square

• Rectangle

• Triangle