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unit of measure: the base unit | the supplementary unit | the derived unit

*geometry: the area of a flat figure | the area of a solid | the volume of the solid*

The ** Isosceles triangle** is a variety of scalene triangle, which has two congruent sides (equal). The third side is called base.

The ** area of an isosceles triangle** by base and lateral side, is determined by a modified version of the formula for right triangle – half product of the base and its height, deducted by one of congruent sides as hypotenuse.

unde:

a — the lateral side of the triangle;

b — the base of triangle;

context information: contemporary and archaic unit of measurement of area