The three angles of a triangle always have to add up to 180degrees. If one of the angles is obtuse(which means it is bigger than 90degrees), the other two angles will both always be less than 90 degrees.
True, because perpendicular means crossing at a 90° angle
Mean is that. median is only at the middle. Not describe the set of numbers. Answer = Mean
-0.7 im guessing
it might not be right but i tried because