View HintsLet us draw a quarter turn and work on it. Think about the other words of point and hands. Apply isosceles triangle property What do we know about sum of all the angles of a parallelogram. What do you know about opposite angles of a parallelogram? What is the sum of three angles of a triangle? Angle sum property of quadrilateral What is the sum of three angles of a triangle? Think about the other words of point and hands. What do you know about opposite angles of a parallelogram? |
