If x is a right angle, what is true for x?
(a) x = 90°
(b) 180° < x < 360°
(c) 0° < x < 90°
(d) 90° < x < 180°
The question was posed to me in examination.
My enquiry is from Lines and Angles Definitions and Basic Terms topic in chapter Lines and Angles of Mathematics – Class 9