Question

a straight angle forms a straight line and has a measure of 180°.together, ∠1 and ∠2 form a straight angle. m∠1 = 103°, find m∠2. m∠2 =

Explanation:

Step1: Sum of angles in straight angle

$m\angle1 + m\angle2 = 180^\circ$

Step2: Calculate $m\angle2$

$m\angle2 = 180^\circ - m\angle1 = 180^\circ - 103^\circ = 77^\circ$

Answer:

77