Answer:
They add up to equal 90 degrees.
Chess board? , the board if there is like a line with points that has points on the same line
If all of the side are equal, that would mean that it is an equilateral triangle. Meaning all of the angles are the same measure. A triangle equals 180 deg. So you divide that by 3 to find each individual side of the equilateral triangle. Therefore m3=60 degrees.
