Triangles are some of the most basic and well-known shapes in geometry, featuring three sides and three angles. Becoming familiar with the methods to calculate various properties of a triangle, such ...

A right triangle is a type of triangle that has one angle measuring exactly 90 degrees. The remaining two angles must each measure less than 90 degrees. There are three sides in a right triangle –the ...

Trigonometry can be used to find the length of a side in a triangle. Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing side in a right-angled ...

The three angles in a triangle add up to \(180^\circ\). If two of the angles are known then the third can be calculated by following these steps: Add the two known angles together. Subtract the total ...