Obtuse. An obtuse angle is an angle that is bigger than 90° degrees, but doesn’t reach a straight line at 180°. ... This circle is divided into 3 equal parts, with 3 equal angles.

More simply, angles in the same segment are equal. Let the obtuse angle MOQ = \(2x\). Using the circle theorem, the angle at the centre is twice the angle at the circumference. Angle MNQ = \(x ...