Geometry: Areas of triangles

Reason For Learning

To learn how to calculate the area of triangles using rectangles as a basis. A knowledge of how to calculate these simple areas will help you to solve many real-life area problems, for example, the area of a house to be carpeted, the area of wall to be painted etc.

Learning Intention

A recap of how to calculate the area of a rectangle (there is a separate learning bite on this if you need more information). Using rectangles to find the formula for the area of a triangle. Using formulae to solve skills-based problems involving triangles and combinations of rectangles and triangles. Using formulae to answer worded problems involving the area of rectangles and triangles.

Key Vocabulary Terms

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ACMMG159 Level 7

Establish the formulas for areas of rectangles, triangles and parallelograms and use these in problem solving