A triangle is always half the area of a rectangle with the same height and width. To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then ...

text{Area of a triangle} = \frac{1}{2} ab \sin{C}\) To calculate the area of any triangle the lengths of two sides and the angle in between are required. Rearrange the equation to make \(\sin{C}\) ...

It categorizes triangles into equilateral ... It introduces the formula for calculating the area of a triangle and explains the Pythagorean theorem, which applies to right triangles for ...