# Triangles: Finding Their Areas

In this worksheet, students calculate the area of a triangle by considering it as half of a rectangle. Key stage:  KS 2

Curriculum topic:   Measurement

Curriculum subtopic:   Calculate Areas

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, we will learn about the area of triangles.

For example:

In the following figure, find the area of the shaded triangles. Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

Find the shaded area of this triangle. The shaded area is __________ cm2

The area of this rectangle is 100 cm². Find the area of the shaded triangle.

• Question 1

Find the shaded area of this triangle. The shaded area is __________ cm2

6
EDDIE SAYS
6 x 2 = 12

12 ÷ 2 = 6

• Question 2

Find the shaded area of this triangle. The shaded area is __________ cm2

70
EDDIE SAYS
20 x 7 = 140

140 ÷ 2 = 70

• Question 3

Find the shaded area of this triangle. The shaded area is __________ cm2

40
EDDIE SAYS
16 x 5 = 80

80 ÷ 2 = 40

• Question 4

Find the shaded area of this triangle. The shaded area is __________ cm2

135
EDDIE SAYS
18 x 15 = 270

270 ÷ 2 = 135

• Question 5

Find the shaded area of this triangle. The shaded area is __________ cm2

36
EDDIE SAYS
9 x 8 = 72

72 ÷ 2 = 36

• Question 6

Find the shaded area of this triangle. The shaded area is __________ cm2

50
EDDIE SAYS
20 x 5 = 100

100 ÷ 2 = 50

• Question 7

Find the shaded area of this triangle. The shaded area is __________ cm2

15
EDDIE SAYS
10 x 3 = 30

30 ÷ 2 = 15
• Question 8

Find the shaded area of this triangle. The shaded area is __________ cm2

32.5
EDDIE SAYS
13 x 5 = 65

65 ÷ 2 = 32.5

• Question 9

Find the shaded area of this triangle. The shaded area is __________ cm2

110.5
EDDIE SAYS
17 x 13 = 221

221 ÷ 2 = 110.5

• Question 10

The area of this rectangle is 100 cm². Find the area of the shaded triangle.

50
EDDIE SAYS
100 ÷ 2 = 50
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