P5/P6 Math: Ratio of 4 Triangles in a Rectangle

A rectangle as a composite figure containing 4 triangles.

The relationship between the triangles and rectangles are given in both fractions and ratio.

A value of the area of one of the shapes is also given.

Such questions are common in P5 and P6 Paper 2.

Calculator usage is allowed.

Triangular window panes forming rectangles and squares

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P5/P6 Math: 4 Unequal Triangles in a Rectangle

This question will test the concept of "Triangles in Rectangle" for both P5 and P6 students.

The most famous triangles in the world are in Eygpt

A triangle is half the area of the rectangle that it shares its base and height with.

But what if there are 4 unequal triangles inside the rectangle that meets "not" at the centre of this rectangle?

Such questions usually appear in Paper 1.

Calculator usage is not allowed.

Diagram may not be drawn to scale

The rectangle above is made up of 4 triangles of unequal areas.

The areas of 3 of the triangles are as shown.

What is the area of triangle D?

If the above question is easy, try to do the more challenging question below.

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