Question

10. If a triangle has an angle of 45° and an angle of 100°, what is the third angle?

A. 45°
B. 35°
C. 55°
D. 100°

Answer 1

So, 35 degrees is your answer.

Explanation:

180 - 100 - 45 = 35 degrees

Hope my answer has helped you!

Answer 2

For this case we have by definition, that the sum of the internal angles of a triangle is 180.

Then, they tell us that two of the angles measure 45 and 100 degrees respectively. If "x" is the missing angle we have:

`45 + 100 + x = 180`

Clearing the value of "x":

`x = 180-45-100\\x = 35`

So, the missing angle is 35 degrees

ANswer:

35 degrees

Option B