F.2 Ch.10 and Ch.12 Pythagoras' theorem & trigonometric ratios

What type of triangles can we apply the Pythagorean theorem to?

• Equilateral triangle

• Isosceles triangle

• Equiangular triangle

• Right-angled triangle

The longest side of a triangle is called the _____.

• hypotenuse

• hippotenuss

• henry

• longsidenuse

Identify the hypotenuse.

• x
• z
• w

What is the relation between the three sides of the right-angle triangle in the figure?

• a²+b²=c²

• a+b=c

• a²-b²=c²

• c-a=c

A right triangle has 2 shorter sides of 3 cm and 4 cm. How long is the hypotenuse?

• 4 cm

• 5 cm

• 7 cm

• 25 cm

Answer explanation

3^2 + 4^2 = 5^2

Find the missing side.

• 9

• 6.40

• 8.23

• 5.63

Find the missing side.

• 8.26

• 9.11

• 8.5

• 6.93

Find the missing side.

• 7.47

• 8.52

• 7.93

• 2.22

Is this a right triangle?

• YES

• NO

• There is not enough information given.

• If your Mum says it is.

Is this triangle a right angled triangle?

• YES

• NO

• There is not enough information to work it out.

• Only on Tuesdays when the moon is full.