Year 9
The case of 30 and 60 degrees
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Lesson details
Key learning points
- In this lesson, we will look at the special cases of 30 and 60 degrees right angled-triangles.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
What is the name of the longest side in a triangle?
congruent
opposite
Q2.
Triangle Y has been enlarged. Work out the length of the base of triangle X.
1.5 cm
8 cm
Q3.
What is the size of the marked angle?
30 degrees
60 degrees
Q4.
What is the length of m?
2.5 cm
5 cm
Q5.
What is the length of the missing side?
4 cm
6 cm
6 Questions
Q1.
a is half the size of the hypotenuse when 𝑥 = ?
30 degrees
45 degrees
Q2.
b = 10 cm when 𝑥 = ?
30 degrees
45 degrees
Q3.
What is the size of the angle marked x ?
15 degrees
60 degrees
Q4.
What is the length of the hypotenuse?
3.5 cm
5 cm
Q5.
What is the length of angle x?
18 cm
9 cm
Q6.
What is the size of angle x?
45 degrees
60 degrees