Angles

This resource contains a collection of dynamic and interactive spreadsheets designed to illustrate teaching points on the topic of angles.

The first sheet provides screens on the following:

Right-angles: draws all angles in multiples of 10 between 0 and 360 degrees, can select multiples of 90 and random angles.

Inequalities (< = >): for each of six diagrams, state whether they are less than equal to or greater than one/two/three right angle(s).

Right-angled triangles: identify the right-angled triangles in a series of four triangles.

How many right-angles? Work out the number of right-angles in different quadrilaterals.

The second spreadsheet provides:

Angle 0-180, 0-360: screens to show various angles, helping children recognise acute, obtuse, right-angles and reflex angles.

Turning Clockwise or Anti-Clockwise: a compass or clock dial shows turn from a selected point. Select the direction and amount of turn.

Direction questions: work out direction after a turn giving size and direction of turn.

Match the angle: match pictures of angles to their correct value.

Angles = 180/360: calculate the value of angles in a straight line or to 360 degrees.

Angles in a triangle: work out value of angles within isosceles, right-angled and scalene triangles.

This resource has been provided by the Virtual Textbook. It is part of the Geometry and Measure sub-collection, which contains many further curriculum linked interactive spreadsheets.

Note
This program was designed to be viewed on a screen with a resolution of 1024 x 768. Users may have to adjust the resolution of their screen for the pages to display as was originally intended. The program uses macros which need to be enabled on the users machine.