Everyone learns the number one rule about triangles in high school: the angles of a triangle add up to 180 degrees. But did you know that sometimes they don't? Triangles are much more interesting than ...

Introduction Do you ever use math as a tool to solve interesting problems? In the 1970s math was often taught with simple worksheets. One teacher was looking for a way to help his students have more ...

The Pythagorean Theorem, a cornerstone of geometry, empowers students to solve right triangle problems and unlock advanced mathematical concepts. Mastering this theorem enhances logical reasoning, ...

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Learn how to find the largest possible rectangle that can fit inside a 3-4-5 right triangle using clear geometric reasoning and simple math. This explanation walks through the setup, key constraints, ...

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This is an updated version of a story first published on May 5, 2024. For many high school students returning to class, it may seem like geometry and trigonometry were created by the Greeks as a form ...

Imagine you’re rolling down the street in a driverless car when you see a problem ahead. An Amazon delivery driver got their van halfway past a double-parked UPS truck before realizing they couldn’t ...

Turns out, triangles unlock the most important bits of knowledge discovered by humans. Love Triangle: How Trigonometry Shapes the World by Matt Parker, shows how this geometry underlies so much of ...