Term 1 Quiz 18-20

What is the length of the unknown side of this right-angled triangle?

• 20 cm

• 18 cm

• 15 .2cm

• 10.58 cm

What is the length of the unknown side of this right-angled triangle?

• 9.22 m

• 8.77 m

• 9.11 m

• 8.67 m

A 3 m ladder leans against a wall. If it is 1 m out from the wall at the ground, how high up the wall will the ladder reach? Round to 2 decimal places.

• 2.83 m

• 2.00 m

• 2.50 m

• 2.23 m

What are the coordinates of A' when A (-5, 4) is reflected in the x-axis?

• (-5, -4)

• (5, 4)

• (-5, 4)

• (5, -4)

This ratio could represent the parts of a ratio and their sum

50 : 35 : 85

• True

• False

Divide 180 in the ratio 2:4?

• 60 : 120

• 90 : 90

• 70 : 110

• 80 : 100

Which option shows the correct way to calculate the area of this parallelogram?

• A = 6 cm × 4 cm

• A = 3 cm × 4 cm

• A = 6 cm × 3 cm

Which option shows the correct way to calculate the area of this triangle?

Select all triangles that are congruent to the given triangle.

(Congruent: same shape, same size)

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• 
• 

How do you calculate a percentage increase of 5%?

• Multiply by 1.05

• Divide by 1.05

• Multiply by 0.95

• Divide by 0.95