Week:- 5

Topic:  Area (Trapezium)

Objective:- At the end of the lesson the pupils should be able to:-

1. Define and draw a trapezium

2. Measure the area of a trapezium

Reference material:- Learn Africa Mathematics UBE edition for primary school book 6

Content

Trapezium

A trapezium is a rectangular shape joined with either a triangle at one end or a triangle at two ends.

ABCD is a rectangle. BCE is a triangle.

∴ ABCD + BCF = ABED.

ABED is known as a trapezium,

that is a rectangle plus a triangle as shown in Fig 1  

ABC is a triangle. EDF is also a triangle. BEDC is a rectangle.

Thus ABC + BEDC + EDF = trapezium ABEF