what is m∠abc?\no m∠abc = 60°\no m∠abc = 67°\no m∠abc = 120°\no m∠abc = 127°
what is m∠abc?\no m∠abc = 60°\no m∠abc = 67°\no m∠abc = 120°\no m∠abc = 127°
Answer
Explanation:
Step1: Recall linear - angle property
$\angle ABC$ and the $60^{\circ}$ angle at point $B$ are linear - pair angles. The sum of linear - pair angles is $180^{\circ}$. Let $m\angle ABC=x$. Then $x + 60^{\circ}=180^{\circ}$.
Step2: Solve for $x$
$x=180^{\circ}-60^{\circ}$. $x = 120^{\circ}$.
Answer:
$m\angle ABC = 120^{\circ}$