Triangle Sum Theorem

For any triangle, no matter how it is classified, whether it's a right triangle or an equilateral triangle or an isosceles triangle, any triangle of any sort, its interior angles will always add up to _____ degrees.

If we know the measure of two of the interior angles of any triangle, we can find the measure of the third by __________ the ________ of the two known interior angles and subtracting the ____ from _______ degrees.