Mathematics Unit 2

What is the formula for finding the circumference of a circle?

C = 2πr or C = πd

What is the formula for finding out the area of a circle?

A = π r²

How do you find the area of a parallelogram?

It's the base multiplied by the height

How do you find out the area of a Trapizium?

It's a half multiplied by the height and then multiplied by the addition of A and B.

What are acute angles?

Angles that are less then 90 degrees

What are Obtuse angles?

Obtuse angles are angles that are between 90 degrees and a hundred degrees.

What are reflex angles?

Reflex angles are angles between 180 degrees and 360 degrees.

What do the angles add up to in a quadrilateral?

They add up to 360 whereas a triangle adds up to 180 degrees.

Name the types of angles that are equal

There's corresponding angles

There's vertically opposite angles

There's alternate angles

Co-interior angles add up to 180 degrees