Ray OX stands on a straight line AB

MATHEMATICS · Single correct · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

Ray OX stands on a straight line AB, forming the adjacent angles ∠AOX and ∠XOB. Which relation between these two angles is always true? (a)

\angle AOX = \angle XOB

(b)

\angle AOX + \angle XOB = 90^{\circ}

(c)

\angle AOX + \angle XOB = 180^{\circ}

(d)

\angle AOX - \angle XOB = 180^{\circ}