Question #0883c
1 Answer
It is the same as any other triangle; the length of the base multiplied by the length of the height (like the area of a square) divided by two.
Explanation:
The isosceles triangle can be defined as having only two sides of equal length or at least two sides of equal length.
If it has only two sides of equal length, those two sides are called the "legs" of the triangle. The side that is not equal in length is the base.
The vertex angle is the angle formed where the two legs of the triangle intersect. The other two angles in isosceles triangles are always equal in measure. The height of the triangle (which can be drawn in if not present) is the perpendicular line from the vertex angle to the base.
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http://mathworld.wolfram.com/IsoscelesTriangle.html
