Question

19. Find m
a.) 63
b.) 117
c.) 73
d.) 107

Answer 1

For this case we have a pentagon shown, that is, it has 5 sides. By definition, the sum of the internal angles of a pentagon is given by:

540 degrees

So:

$96 + 118 + 104 + x + 115 = 540\\433 + x = 540\\x = 540-433\\x = 107$

Now we have to:

$A + x = 180\\A = 180-x\\A = 180-107\\A = 73$

Answer:

Option C