Arithmetic

[girlpower]

The measures of two angles of a triangle are 35 and 45. What is the measure of the third angle of the triangle?

Would be like this 35 times 45=1575

 

[MarkFL]

Let \(\displaystyle A\) be the unknown angle. The three interior angles of a triangle will add to \(\displaystyle 180^{\circ}\), hence:

\(\displaystyle 35^{\circ}+45^{\circ}+A=180^{\circ}\)

Now solve for \(\displaystyle A\).

 

[HallsofIvy]

Whoever gave you this problem expects you to know that, in Euclidean geometry, the angles in a triangle always sum to 180 degrees.

(If you don't know that, you should realize that "35 degrees" times "45 degrees" will give an answer having units of "degrees squared". And angles are not measured in "degree squared".)

(And we have had to assume that your "35" and "45" meant "35 degrees" and "45 degrees" because you did not say that. There are 200 "grads" in a triangle.)