Question

Angles E and F are adjacent. If the measure of ∠E is 28.3° and together they measure 43°, what is the measure of ∠F?

Answer 1

Step 1

Adjacent angles are angles that have a common side, a common vertex, and do not overlap.

Step 2

Conclude based on step 1

Therefore

$\angle E\text{ +}\angle F=43^0$$\begin{gathered} \angle E\text{ = 28.3} \\ So\text{ that after substitution} \\ \angle F=43-28.3=14.7^O \end{gathered}$

Hence option A is right.