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 missing length when given area of a triangle - Answers
1. The answer:
\(x=44 \text { units }\)
2. The answer:
\(x=11 \text { units }\)
3. The answer:
\(x=10 \text { units }\)
4. The answer:
\(x=5 \text { units }\)