Checking and securing understanding of perimeter for compound shapes

Maths

In this unit, pupils built upon their prior learning of the area of different shapes. In the future unit, pupils will continue to further develop their understanding of shapes by considering surface area and volume of pyramids, spheres and cones.

In the prior unit, pupils derived the formula for the circumference and area of a circle. In this unit, this knowledge is combined with knowledge of fractions to find the arc length and area of a sector.

In this unit, knowledge of circles and polygons is drawn upon to find the arc length and area of a circle sector and areas of complex compound shapes.

2D and 3D shape: compound shapes

Which of the following are examples of compound shapes?

The perimeter of this compound shape is {{ }} cm.

Match the marked edges with the correct calculations.

The __________ is the distance around a 2D shape. 

The perimeter of this rectangle is {{ }} cm.

The perimeter of this parallelogram is {{ }} cm.

The perimeter of this triangle is {{ }} cm.

Which of these shapes has different perimeter to the other three shapes?

The length of the edge marked 'a' is {{ }} cm.

Starter Quiz