Angles

Activities

Angle Chase
Activity
Find all of the angles on the geometrical diagrams.

Angle Parallels
Activity
Understand and use the relationship between parallel lines and alternate and corresponding angles.

Angle Points
Activity
Apply the properties of angles at a point, angles on a straight line and vertically opposite angles.

Angles in a Triangle
Activity
A self marking exercise involving calculating the unknown angle in a triangle.

Circle Theorem Pairs
Activity
A pairs game based around ten theorems about the angles made with chords, radii and tangents of circles.

Circle Theorems Exercise
Activity
Show that you understand the circle theorems with this self marking exercise.

Estimating Angles
Activity
Estimate the size of the given acute angles in degrees.

Measuring Angles
Activity
Measure the size of the given angles to within two degrees of their actual value.

Online Logo
Activity
An online version of the Logo programming language.

Pie Charts
Activity
Estimate what the pie chart sectors represent.

Polygon Angles
Activity
A mixture of problems related to calculating the angles in polygons.

Proof of Circle Theorems
Activity
Arrange the stages of the proofs for the standard circle theorems in the correct order.

Scale Drawings
Activity
Measure line segments and angles in geometric figures, including interpreting scale drawings.

Snooker Angles
Activity
An online game for one or two players requiring an ability to estimate angles.

Investigations

Tessellations
Activity
Drag the shapes onto the canvas to create tessellating patterns and investigate the laws of tessellations.

Videos

Angle Properties Song
Activity
A song about the angles made with parallel lines.

Ruler and Compass Construction
Activity
A demonstration of standard ruler and compass constructions

The 50 Cent Riddle
Activity
A 50 cent coin has 12 equal sides. If you place two coins next to each other on a table, what is the angle formed between the two coins?

Visual Aids

Angle Theorem Kim's Game
Activity
A memory game to be projected to help the whole class revise the circle angle theorems.

Angle Theorems
Activity
Diagrams of the angle theorems with interactive examples.

Circle Theorems
Activity
Diagrams of the circle theorems to be projected onto a white board as an effective visual aid.

Kite Maths
Activity
Can you make a kite shape from a single A4 size sheet of paper using only three folds?

Plane Bearings
Activity
A visual aid designed to help pupils estimate three figure bearings.

Starters

Starter
Air Traffic Control
Work out which aircraft are in danger of colliding from their positions and direction of travel. An exercise in understanding bearings.

Starter
Angle Estimates
Estimate the sizes of each of the angles then add your estimates together.

Starter
Pie Chart
An exercise in estimating what the sectors of a pie chart represent.

Starter
Sectors
Work out which sectors fit together to make complete circles. Knowledge of the sum of the angles at a point will help find more than one correct solution to this puzzle.

Starter
Square Angles
Find a trapezium, a triangle and a quadrilateral where all of the angles are square numbers.

23 items are currently in this category.

Teachers might find the complete Angles Topic List useful.

Pupils should understand that angles represent an amount of turning and be able to estimate the size of angle. When constructing models and drawing pupils should be able to measure and draw angles to the nearest degree and use appropriate language associated with angles.

Pupils should know the angle sums of polygons and that of angles at a point and on a straight line. They will learn about angles made in circles by chords, radii and tangents and recognise the relationships between them.

Pupils will work with angles using trigonometry, transformations and bearings. In exams pupils are often instructed that while non-exact answers should be given to three significant figures, angle answers should be given to one decimal place.


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