Year 9
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- In this lesson, we will recap how to use Pythagorean theorem to find the length of missing sides in triangles leaving the answers is surd form.
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.
Loading...
6 Questions
Q1.
√9 is a surd
Option 3
Option 4
Option 5
True
Q2.
Which of the following is a surd
A
B
D
Q3.
Which on the following is NOT a surd
B
C
D
Q4.
Which of the following is a surd?
A
B
D
Q5.
Evaluate √49
24.5
98
Q6.
Estimate √57
28.2
28.5
7.2
7 Questions
Q1.
Which of the following is a surd
A
C
D
Q2.
Which of the following is NOT a surd
Option 1
B
C
Q3.
Evaluate √144
1.44
72
Q4.
A right- angled triangle has sides a, b and c as show in the diagram. What is the correct formula to find the length a.
A
B
C
Q5.
A right- angled triangle is shown in the diagram below. Find the length of the hypotenuse.
116
14
28
Q6.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
√135
√33
153
Q7.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
√146
36
96