- Use formulas to find the area of triangles.
How could we find the area of this triangle?
Make it into a parallelogram. This can be done by making a copy of the original triangle and putting the copy together with the original. As you can see in the diagram below, one triangle looks the same as the one above, and the other is upside down.
How many triangles are used to make up the parallelogram above? __________
2. Another name for the height of a triangle is the ___________________.
Area of a Triangle
1. True or False: In a triangle, the base and the height intersect at an obtuse angle.
3. Fill in the blanks:
In area formulas, the letter _____ usually stands for the base and the letter _____ usually stands for the height.