There are 366 different Starters of The Day, many to choose from. You will find below some starters on the topic of Angles. A lesson starter does not have to be on the same topic as the main part of the lesson or the topic of the previous lesson. It is often very useful to revise or explore other concepts by using a starter based on a totally different area of Mathematics.

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### Angles Starters:

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

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

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

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.

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

## Exercises

#### Angle Chase

Find all of the angles on the geometrical diagrams.

#### Angle Parallels

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

#### Angle Points

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

#### Angle Theorem Kim's Game

A memory game to be projected to help the whole class revise the circle angle theorems.

#### Angle Theorems

Diagrams of the angle theorems with interactive examples.

#### Angles in a Triangle

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

#### Circle Theorem Pairs

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

#### Circle Theorems

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

#### Circle Theorems Exercise

Show that you understand and can apply the circle theorems with this self marking exercise.

#### Estimating Angles

Estimate the size of the given acute angles in degrees.

#### Geometry Toolbox

Create your own dynamic geometrical diagrams using this truly amazing tool from GeoGebra.

#### Kite Maths

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

#### Measuring Angles

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

#### Online Logo

An online version of the Logo programming language with 30 mathematical challenges.

#### Pie Charts

Develop the skills to construct and interpret pie charts in this self-marking set of exercises.

#### Plane Bearings

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

#### Polygon Angles

A mixture of problems related to calculating the interior and exterior angles of polygons.

#### Proof of Circle Theorems

Arrange the stages of the proofs for the standard circle theorems in the correct order.

#### Scale Drawings

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

#### Snooker Angles

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

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