Q3. Calculate

Starter QuestionsStarter Questions

Q1. Find the area of the triangle.

Q2. Expand out 2w( w - 5) – 3w

Q4. Factorisea) 3b + 9 b) 12s + 6t + 9

15% of 64

4cm

3cm

Learning IntentionLearning Intention

To develop a single formula for the area of ANY rhombus and

Kite.

Use the formula to solve problems.

Rhombus and Kite AreaRhombus and Kite Area

Area of a RhombusArea of a Rhombus

1Rhombus Area= (D×d)

2

D

d

Rectangle Area = (D×d)

This part ofthe rhombus

is half of the smallrectangle.

Area of a KiteArea of a Kite

1Kite Area= (D×d)

2

D

d

Rectangle Area = (D×d)

Exactly the same process as the rhombus

Rhombus and Kite Rhombus and Kite AreaArea

1Rhombus Area= (D×d)

21

Area = (5×2)2

Example 1 : Find the area of the shapes.

5cm

2cm

2Area = 5cm

1Kite Area= (D×d)

21

Area = (9×4)2

2Area = 18cm

9cm

4cm

Now try Ex 6.1 Pg13 Ch1 (M.I.A)

Area of a Area of a Kite & RhombusKite & Rhombus