Quick answer
A triangle is a polygon with three sides, three vertices and three interior angles.
- Main formula
- Area = (base x height)/2.
- Quick example
- Write the known measurements first, substitute them in the formula and keep the units.
Definition
A triangle is a polygon with three sides, three vertices and three interior angles.
Main properties
- The sum of its interior angles is 180°.
- Measurements must use the same unit before calculating.
- Draw a quick sketch to identify each value.
Formula
Area = (base x height)/2.
Example method
Read the problem, mark the known measurements, choose the formula and simplify the result step by step.