Completion requirements
You can think of any triangle as half of a parallelogram! This is why its area is half that of the parallelogram: half of height times base. Watch this lecture series and complete the interactive exercises to practice using the triangle area formula.
Practice
Find base and height on a triangle - Answers
1. A is the base.
2. The following images show the height that corresponds with each base:
3. C is the base.
4. The following images show the height that corresponds with each base: