Surds and triangles

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.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.√9 is a surd

1/6

Q2.Which of the following is a surd

2/6

Q3.Which on the following is NOT a surd

3/6

Q4.Which of the following is a surd?

4/6

Q5.Evaluate √49

5/6

Q6.Estimate √57

6/6

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.√9 is a surd

1/6

Q2.Which of the following is a surd

2/6

Q3.Which on the following is NOT a surd

3/6

Q4.Which of the following is a surd?

4/6

Q5.Evaluate √49

5/6

Q6.Estimate √57

6/6

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Surds and triangles Quiz

Exit Quiz

Q1.Which of the following is a surd

1/7

Q2.Which of the following is NOT a surd

2/7

Q3.Evaluate √144

3/7

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.

4/7

Q5.A right- angled triangle is shown in the diagram below. Find the length of the hypotenuse.

5/7

Q6.A right- angled triangle is shown int he diagram below. Find the length of the missing side.

6/7

Q7.A right- angled triangle is shown int he diagram below. Find the length of the missing side.

7/7

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Surds and triangles Quiz

Exit Quiz

Q1.Which of the following is a surd

1/7

Q2.Which of the following is NOT a surd

2/7

Q3.Evaluate √144

3/7

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.

4/7

Q5.A right- angled triangle is shown in the diagram below. Find the length of the hypotenuse.

5/7

Q6.A right- angled triangle is shown int he diagram below. Find the length of the missing side.

6/7

Q7.A right- angled triangle is shown int he diagram below. Find the length of the missing side.

7/7

Lesson summary: Surds and triangles

Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga