**Just to remind you: shapes that do not have volume (they are flat) are called two-dimensional** (2D), e.g. the square and the circle. Shapes that have volume are called three-dimensional (3D), e.g. the cube and the sphere.

This is an 'odd one out' style of quiz. In 11-plus non-verbal reasoning, odd ones out can be really tricky. In this maths quiz, things are a little simpler, but you still need to use all your skills to work out which one is odd.

Remember to take your time, read the questions carefully and eliminate any answers that are obviously not correct. If you get any wrong, don't worry. Read the helpful comment which appears once you've played the question and try again.

Don't be the odd man out - do this quiz and have fun! When you get 10 out of 10, move onto our next quiz on shapes.

1.

Which one of the following is the odd man out?

Vertex

Edge

Point

Face

'Point' can't normally be used to describe the properties of a shape

2.

Which one of the following is the odd man out?

Height

Elevation

Slope

Altitude

All the other words have to do with height. 'Slope' tells you how much something slants upwards or downwards

3.

Which one of the following is the odd man out?

Square

Trapezium

Rhombus

Rectangle

Only one pair of sides is parallel

4.

Which one of the following is the odd man out?

Parallel

Intersect

Cross

Cut

'Parallel' means that two or more things, e.g. lines, do NOT cut, cross, or intersect

5.

Which one of the following is the odd man out?

Pentagon

Hexagon

Octagon

Decagon

The pentagon has an odd number of sides (5), hexagon (6), octagon (8) and decagon (10)

6.

Which one of the following is the odd man out?

Cylinder

Cube

Cuboid

Square-based pyramid

The cylinder is the only shape that uses curved shapes in its construction: the top and the base are circles and the wall of the cylinder is curved

7.

Which one of the following is the odd man out?

Reflex angle

Acute angle

Right angle

Obtuse angle

This is the only angle that CAN'T be used to construct a triangle: a reflex angle is an angle greater than 180° but less than 360°

8.

Which one of the following is the odd man out?

Diameter

Radius

Circumference

Tangent

All the other words can be used to describe the properties of a given circle: this is not so for 'tangent'. A 'tangent' can be thought of as a line that touches a curve without crossing it

9.

Which one of the following is the odd man out?

Square

Rectangle

Circle

Parallelogram

I hope you got this one right

10.

Which one of the following is the odd man out?

Rectangle

Rhombus

Oblong

Trapezium

All the other shapes are parallelograms

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