A=(1/2)*b*h, where A represents the area, b the base, and h the height Area equals 1/2 times the base times the height.
Area of Equilateral Triangle - Derivation, Formula & Examples
How to calculate the area of a triangle without knowing its height
How to find the area of a triangle - BBC Bitesize
How to Find the Area and Perimeter of a Triangle
Area of a Triangle in Coordinate Geometry
Finding the Area of a Triangle Using Its Coordinates - dummies
Area of Triangle with 3 Sides - Formula, Proof, Examples
Question Video: Finding the Area of an Isosceles Triangle
Herons Formula. Explained with pictures, examples and practice problems