The Area of a Triangle

To find the area of a triangle, use the following formula

The area of a triangle is always  half the product of the height and base.

A=½ (base × height)
Any side can be a base, but every base has only one height.The height is the line from the opposite vertex and perpendicular to the base. In the picture above, the base CB has one and only one height, which is labeled in the picture.
The height is called the altitude
Sine function to find Area of Triangle

To find the area of the triangle below, use the formula above.

A= (b*h)/2
A=(10*3)/2 = 30/2 = 15


Explanation of the Area of a Triangle

Area and the Similar Triangles Products of Sides in Similar Triangles




The height of a triangle is a line called the altitude.
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