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Topics1 of 12

Triangles: Types and Rules

What We'll Learn

Here's what we'll learn today!

Triangles are the most important shape in geometry — master the Pythagorean theorem and you can tackle many ISEE questions.

Topics we'll cover

Right triangles
Equilateral triangles
Isosceles triangles
Special right triangles (30-60-90, 45-45-90)
Pythagorean theorem (a² + b² = c²)

Click Nextwhen you're ready to start!

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Triangles: Types and Rules — ISEE Upper Level Math Study Guide | TestMastered