Monday 22nd February 2021
Complete the quick maths starter.
DO NOT SPEND MORE THAN 10 MINUTES ON THIS ACTIVITY
WALT find the area of parallelograms.
Maths lesson part 1
What is a parallelogram?
A parallelogram is a 4-sided shape (quadrilateral ) formed by two pairs of parallel lines.
Opposite sides are equal in length and opposite angles are equal in measure.
This means that we can work out the area of a parallelogram in the same way as a rectangle:
we write the formula like this:
Area = Base x Height
A = B x H
Make sure to use the perpendicular height (at a right-angle to the base) rather than the slant height!
Look at the parallelogram below, it looks like a wonky rectangle.
The height must be the perpendicular height( at a right angle), measured across the shape.
If we use the the formula, Area = base x height, what is the area of parallelogram?
Click the star to find out the answer.
Now try finding the area of these parallelograms.
REMEMBER Area= base x height!
Check your answers as you go by clicking on the stars.
Remember perpendicular is when lines meet at a right angle.
Optional Extra - for those of you who want a challenge!