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Area of Parallelograms and Triangles

Geometry and Measures Area of Parallelograms and Triangles

🎬 Video Tutorial

(0:01) Height of Parallelogram: The height ($h$) is always perpendicular to the base and may lie inside or outside the parallelogram.
(0:40) Area of a Parallelogram: The formula is $A = b \times h$, where $b$ is the base and $h$ is the perpendicular height.
(1:15) Height of Triangle: Like in a parallelogram, the triangle’s height is perpendicular to the base and can lie inside or outside, extending from the base to the opposite vertex.
(1:52) Area of a Triangle: The area of a triangle is $A = \frac{1}{2} \times b \times h$, derived by visualising the triangle as half of a rectangle or parallelogram with the same base and height.

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📂 Revision Cards

Height of a parallelogram illustrated with a perpendicular height h from base b to the opposite side.

Diagram showing the formula for the area of a parallelogram, A = b?h, with labelled base (b) and height (h) on two parallelograms.

Height of a triangle, with height h perpendicular to base b and extending from b to the opposite vertex, illustrated with two triangle diagrams.

Formula for the area of a triangle with base and height labelled, showing two triangles with base (b) and height (h).

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