Uploaded July 2026 | Updated September 2026, 2 weeks ago

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In this geometry tutorial, you will learn how to perform advanced geometric constructions to create new triangles that are perfectly equal in area to a given triangle. After a brief introduction, the video walks you through the step-by-step process of constructing an isosceles triangle with the exact same area as your original triangle. Next, you will discover the drafting techniques required to construct a right-angled triangle that matches the given area. Finally, we explore how to manipulate dimensions by drawing a third triangle equal in area to the original simply by changing the length of the base.

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khanacademy.org/math/class-9-geometry-od/x0a98afb01410c41a:construction?lang=en

Timestamps:
00:00 - Introduction
00:20 - Drawing an isosceles triangle equal in area to a given triangle
03:18 - Drawing a right angled triangle equal in area to a given triangle
05:00 - Drawing a triangle equal in area to a given triangle by changing the length of the base

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