Area of Triangles

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 - Questions

1. The triangle shown below has an area of 12 units ^{2}.



Find the missing length.

x= ______ units

2. The triangle shown below has an area of 22 units { }^{2}.



Find the missing length.

x= ______ units

3. The triangle shown below has an area of 40 units ^{2}.



Find the missing length.

x= ______ units

4. The triangle shown below has an area of 10 units ^{2}.



Find the missing length.

x= ______ units