Triangle angle calculator is a safe bet if you want to know how to find the angle of a triangle. Whether you have three sides of a triangle given, two sides and an angle or just two angles, …

This free triangle calculator computes the edges, angles, area, height, perimeter, median, as well as other values and a diagram of the resulting triangle.

Jul 23, 2025 · Line up one side of the angle with the 0° line on the protractor. Look at where the other side of the angle points — the number it touches is the measure of the angle in degrees.

Feb 24, 2025 · You can calculate the measure of an angle in a polygon if you know the shape of the polygon and the measure of its other angles or, in the case of a right triangle, if you know …

We can find an unknown angle in a right-angled triangle, as long as we know the lengths of two of its sides. The ladder leans against a wall as shown.

Angle Calculator instantly calculates angles in triangles, polygons, or between lines, helping students, engineers, and designers solve geometry problems.