8.2 Adding and subtracting fractions

5 2D shapes

5.1 Quadrilaterals

Worked example 1

I am a quadrilateral. All my sides are equal in length. None of my angles are 90°. I have two pairs of equal angles. What shape am I?

Square or rhombus … Cannot be square … Must be a rhombus. All sides are equal in length. No angles are 90°. Two pairs of equal angles.

bisect decompose diagonal justify parallel trapezia

Exercise 5.1

Focus 1 Name each of these special quadrilaterals.

All the names are in the box. kite rhombus square parallelogram trapezium rectangle isosceles trapezium

a b c

d e f g