Answer:
The measure of the largest triangle is 72.
Explanation:
Set up an equation to find the angle. note that angles in a triangle sum to 180.
With this information, we can set up an equation:
24x + 21x + 15x = 180
(add the x terms)
60x = 180
(divide both sides by 60)
x = 3
We now know what x equals. Now, we can multiply 3 by the largest angle of all- 24.
24 * 3 = 60.
Hope this helps.