If we look at the triangle, we've been given the interior angles of the triangle, and they haven't told us the actual side lengths. So, how are we supposed to actually order them from shortest to longest?

Given the lengths of two sides of a triangle, what can we say about the third side?

The Pythagorean theorem describes a special relationship between the sides of a right triangle. Even the ancients knew of this relationship. In this topic, we’ll figure out how to use the Pythagorean …

In this article, we'll take the first steps towards understanding how the angle measures and side lengths give us information about each other in the special case of right triangles.

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Use Pythagorean theorem to find isosceles triangle side lengths Get 5 of 7 questions to level up!

Learn how to use trig functions to find an unknown side length in a right triangle. We can use trig ratios to find unknown sides in right triangles.

The video explores how triangles are classified based on their sides and angles. It introduces the terms scalene, isosceles, and equilateral for side lengths, and acute, right, and obtuse for angles.

Learn how to use the law of cosines to find the missing side length of a triangle when given two side lengths and the contained angle measure.

And what I want to do this video is come up with the ratios for the sides of a 45-45-90 triangle, just like we did for a 30-60-90 triangle. And this one's actually more straightforward.