Uploaded July 2026 | Updated September 2026, 2 weeks ago

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In this video, we learn how to find the shortest path between two points on the surface of a cube by unfolding it into a two-dimensional net. We explore how geometry and the Pythagorean theorem help us determine the minimum distance and visualize the shortest route.

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khanacademy.org/math/class-8-ncf/x7eef1bd24a76901b:exploring-some-geometric-themes?lang=en

Timestamps:
00:00 – Introduction
00:30 – Visualizing the shortest path on the surface of a cube
01:03 – Unfolding the cube into a net
01:16 – Key idea: Shortest path on a cube becomes a straight line on its net
02:55 – Example 1: Finding the shortest path between two points on a cuboid
04:09 – Applying the Pythagorean theorem
04:53 – Example 2
05:37 – Different unfoldings
06:00 – Calculating the shortest distance using Pythagoras


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