A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular, forming a right angle (1⁄4 turn or 90 degrees).

Right triangle calculator to compute side length, angle, height, area, and perimeter of a right triangle given any 2 values. It gives the calculation steps.

Apr 2, 2025 · Triangles have three sides and three interior angles. Usually each side is labeled with a lowercase letter to match the uppercase letter of the opposite vertex.

Triangle A shape with three straight sides and three angles. Square A shape with four equal sides and four right angles. Rectangle A shape with four sides, where opposite sides are equal, and all angles …

The perimeter of a triangle is calculated in much the same way as the perimeter of a rectangle: simply add the lengths of the sides of the triangle (in this case, the figure has only three sides, and these …

Being a triangle is more like being a quadrilateral than it is like being a rectangle or a square. Rectangles are more like each other than triangles are like each other, and squares are even more alike than …

There are three main parts to a rectangle shape – A rectangle’s length, width, and diagonal are important when calculating different measurements. Follow simple equations to calculate the …