## Lesson details

### Key learning points

1. In this lesson, we will learn to form quadrilaterals using the properties of circles. We will also learn to use symmetrical properties of special quadriaterals.

### 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.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
How many can be constructed with the following angle measures?100°, 40°, 40°
Exactly one triangle can be constructed
Correct answer: More than one triangles can be constructed
No triangles can be constructed
Q2.
How many triangles can you draw with three side lengths of 4 cm, 5 cm and 10cm?
Four possibilities
One possibility
Two possibilities
Q3.
Complete the sentence about the image below: You can construct different triangles if you are given two _____ and one _____ angle.
exterior, side
interior, side
side, exterior
Q4.
For the image below, both of the triangles above have side lengths of ______ and 7cm and an interior angle of ______.
4cm and 148°
7cm and 74°
Q5.
How many triangles can you draw with this information? One side of length 7 cm, one side of length 5cm and a 40° angles.
Impossible
One possibility
Two possibilities

## Exit quiz

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### 5 Questions

Q1.
Complete the sentence by choosing the correct option below: We can use our knowledge of _______ to describe the ______ of quadrilaterals.
arcs, length
constructions, properties
Q2.
Use the image to help you complete the sentence: The ______ is the same length in both circles. The sides of the shaded quadrilateral are all radii, so they are ________ in length
diameter, different
diameter, equal
Q3.
Kite
Parallelogram
Sqaure
Q4.
Choose a quadrilateral you can form by joining dots on the circle below.
Kite
Parallelogram