CPM Homework Help : INT2 Problem 8-14

In the diagram at right, what are the measures of the exterior angles of the triangle, which are labeled $a, b,$ and $c$ ? What is the sum of the exterior angle measures?

Hint 1:

$m∠a + 48^\circ = 180^\circ$

Hint 2:

Use similar methods to calculate $m∠b$ and $m∠c$ .

Answer:

$360^\circ$