👉 Learn how to evaluate the six trigonometric functions given a right triangle. A right triangle is a triangle with 90 degrees as one of its angles. A right triangle is made up of two legs, which ...

👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right ...

Find out about regular 2D shapes and irregular polygons. Types of triangle Find out about scalene, equilateral, isosceles and right-angled triangles. Parts of a circle Discover the features of a ...

To calculate the area of a rectangle you multiply the length by the width. A right-angled triangle is like half a rectangle. So to calculate the area of a triangle, you can work out the area of the ...