JSS1: MATHEMATICS - 2ND TERM
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Algebraic Processes | Week 14 Topics|1 Quiz
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Simplification of Algebraic Expressions | Week 24 Topics|1 Quiz
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Simplification of Algebraic Expressions 2 (Use of Brackets) | Week 34 Topics|1 Quiz
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Simple Equations | Week 41 Topic|1 Quiz
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Simple Equations II | Week 53 Topics|1 Quiz
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Plane Shapes I | Week 65 Topics|2 Quizzes
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Plane Shapes II | Week 77 Topics|1 Quiz
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Plane Shapes III | Week 87 Topics|1 Quiz
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Decimals and Percentages I | Week 92 Topics|1 Quiz
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Decimals and Percentages II | Week 103 Topics|1 Quiz
Area of a Triangle
Topic Content:
- Area of a Triangle
If you divide a rectangle into two equal parts by drawing any of its diagonals, each half of the rectangle is a right-angled triangle. See the diagram below. We can then use this to find the area of a triangle.

Area of a right-angled \( \scriptsize \Delta = \normalsize \frac {1}{2} \scriptsize \; \times \; base \; \times \; height \)
Example 8.5.1:
Calculate the area of the triangle with a base of 6 cm and
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