Area of a Triangle

What is the area of a triangle with base length 2 and height 4?

1/2 * 3 * 4 = 4

What is the area of a triangle with base length 3 and height 6?

1/2 * 3 * 6 = 9

The area of a triangle is 18. The base is twice the length of the height. What is the base and height?

1/2 * b * h = 18 b*h = 18/0.5 =36 -2h*h = 3h = 36 -h = 12 -b = 2*12 = 24

The area of a triangle is 32 and the base and height are the same length. What is the length of the base and height?

1/2 * b * h = 32 b = h - 1/2 b^2 (or 1/2 h^2) = 32 - b^2 = 32/0.5 = 64 - b = /64 = 8 = h

If a triangle's base and height are equal, then the area equation can be simplified into what equation?

1/2 b^2 or 1/2h^2

The area of a triangle is 30 and it's height is 5. What is the triangle's base length?

12

The area of a triangle is 16 and it's base is 4 long. What is it's height?

8

The area of a right isosceles triangle is fraction of the area of a square with the same side length?

Area of a square = s^2 Area of a triangle = 1/2s^2 Area of the triangle is 1/2 the area of the square

Area of a Triangle

You need to know: The area of a triangle is given by the equation A= 1/2 bh where b is the base length and h is the height. Remember: The height is always measured perpendicular to the base.