Answer:
72° is the largest angle, 63°, 45°
Step-by-step explanation:
7x + 5x + 8x = 180
20x = 180
20x/20 = 180/20
x = 9
I set the equation equal to 180 because there are 180 degrees in a triangle.
Now find the largest angle, which will be the 8x, since 8 is bigger than 5 and 7.
8x
8(9)
72° is the largest angle
If you need the other two angle measures:
7x
7(9)
63°
5x
5(9)
45°
