### Home > INT3 > Chapter 7 > Lesson 7.2.5 > Problem7-109

7-109.

What are the area and perimeter of $ΔABC$ below? Give both exact answers and approximate (decimal) answers. Homework Help ✎

The height creates two special right triangles. What are the $45^\circ-45^\circ-90^\circ$ and $30^\circ-60^\circ-90^\circ$ triangle patterns?

Refer to the Math Notes box below (from a previous course) to determine the unknown sides.
Then use this information to calculate the area and perimeter of the original triangle.