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These are the Transum resources related to the statement: "Pupils should be taught to {know and apply Area = ½ ab sin C to calculate the area, sides or angles of any triangle}".

Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.

Here are some exam-style questions on this statement:

- "
*The Tamarack triathlon race consists of swimming, cycling and running. Competitors swim from A to B, then cycle from B to C and finally run from C back to A.*" ... more - "
*The area of triangle ABC (not drawn to scale) is*" ... more - "
*Four congruent triangles come together to make a square as shown in the diagram. The ratio of the area of one triangle to the area of the square is 1:5. Find the area of the square in square centimetres.*" ... more - "
*In triangle ABC, AB = 7cm and AC = 9cm. The area of the triangle is 20cm*" ... more^{2}. - "
*The diagram (not to scale) shows a quadrilateral made up of a number of triangles.*" ... more - "
*In the diagram of triangle ABC (not to scale) D is a point on BC.*" ... more - "
*The diagram below shows triangle ABC and the lengths of its sides. It is known that the cosine of angle \(C\hat{A}B\) is one third.*" ... more - "
*The diagram shows quadrilateral ABCD.*" ... more - "
*A builder marks out three points A, B and C on the ground such that AB = 11m , AC = 15m and angle BAC = 124*" ... more^{o}. - "
*A drone flying test course is in the shape of a triangle, ABC, with AB = 400m , BC = 600m and angle ABC = 44*" ... more^{o}. The course starts and finishes at point A. - "
*The diagram shows a circle of radius 8.6cm with points ABCD on the circumference of the circle.*" ... more

Click on a topic below for suggested lesson Starters, resources and activities from Transum.

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