KS3 Angles Quiz – Test Your Knowledge on Shapes and Angles

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Maths Quiz - Level 5-6 Shapes - Angles (Questions)

Master KS3 angle facts. Identify acute and obtuse angles, use straight-line and around-a-point rules, and solve missing-angle problems with clear reasoning.

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Fascinating Fact:

Crossing roads create vertical opposite angles that are equal; if one angle is 46°, the opposite is also 46°.

In KS3 Maths, angle work focuses on key rules: angles on a straight line add to 180°, around a point to 360°, vertically opposite angles are equal, and angles in a triangle total 180°. You’ll apply these to find unknown angles, including where parallel lines are involved.

Key Terms

Acute angle: An angle smaller than 90°.
Vertically opposite angles: Equal angles formed when two straight lines cross.
Corresponding angles: Equal angles formed when a transversal crosses parallel lines; they sit in matching “corners.”

Frequently Asked Questions (Click to see answers)

What are the essential KS3 angle facts I should remember?

Know these: straight line = 180°, around a point = 360°, triangle = 180°, vertically opposite angles are equal, and parallel-line angle pairs can be equal or supplementary.

How do I find a missing angle on a straight line?

Angles on a straight line add to 180°. Subtract the known angle from 180°. For example, if one angle is 112°, the other is 180° − 112° = 68°.

What are alternate and corresponding angles with parallel lines?

With parallel lines, alternate angles (Z-shape) are equal, and corresponding angles (F-shape) are equal. Co-interior angles (C-shape) add to 180°.

Try These Related Quizzes

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[ ]	right angle

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[ ]	right angle

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[ ]	right angle

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[ ]	right angle

What is 'angle A' in the diagram below?

[ ]	80^o
[ ]	100^o
[ ]	120^o
[ ]	140^o

What is 'angle A' in the diagram below?

[ ]	90^o
[ ]	180^o
[ ]	210^o
[ ]	270^o

What is 'angle A' in the diagram below?

[ ]	55^o
[ ]	65^o
[ ]	75^o
[ ]	85^o

What is 'angle A' in the equilateral triangle below?

[ ]	50^o
[ ]	60^o
[ ]	70^o
[ ]	80^o

What is 'angle A' in the regular pentagon below?

[ ]	80^o
[ ]	88^o
[ ]	92^o
[ ]	108^o

10.

What is 'angle A' in the regular hexagon below?

[ ]	80^o
[ ]	120^o
[ ]	180^o
[ ]	240^o

You can find more about this topic by visiting BBC Bitesize - Angles

Maths Quiz - Level 5-6 Shapes - Angles (Answers)

The angle in the picture below is a(n) .......

[x]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[ ]	right angle

Acute angles are less than 90^o

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[ ]	reflex angle
[x]	right angle

Right angles are exactly 90^o

The angle in the picture below is a(n) .......

[ ]	acute angle
[x]	obtuse angle
[ ]	reflex angle
[ ]	right angle

Obtuse angles are between 90^o and 180^o

The angle in the picture below is a(n) .......

[ ]	acute angle
[ ]	obtuse angle
[x]	reflex angle
[ ]	right angle

Reflex angles are between 180^o and 360^o

What is 'angle A' in the diagram below?

[ ]	80^o
[ ]	100^o
[x]	120^o
[ ]	140^o

The angles on a straight line add up to 180^o

What is 'angle A' in the diagram below?

[ ]	90^o
[ ]	180^o
[ ]	210^o
[x]	270^o

The angles in a circle add up to 360^o

What is 'angle A' in the diagram below?

[ ]	55^o
[ ]	65^o
[x]	75^o
[ ]	85^o

90^o + 195^o + 75^o = 360^o

What is 'angle A' in the equilateral triangle below?

[ ]	50^o
[x]	60^o
[ ]	70^o
[ ]	80^o

The angles in a triangle add up to 180^o

What is 'angle A' in the regular pentagon below?

[ ]	80^o
[ ]	88^o
[ ]	92^o
[x]	108^o

All angles in a regular pentagon are the same. (The length of the sides are also the same)

10.

What is 'angle A' in the regular hexagon below?

[ ]	80^o
[x]	120^o
[ ]	180^o
[ ]	240^o

Remember that all the angles in a regular hexagon are the same and all the lengths of the sides are the same

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Maths Quiz - Level 5-6 Shapes - Angles (Questions)

Fascinating Fact:

Key Terms

Frequently Asked Questions (Click to see answers)

Try These Related Quizzes