find the measure of the missing angle.
answer attempt 1 out of 2
a =

Question

Accepted Answer

# Explanation:
## Step1: Recall the straight - angle property
A straight angle measures $180^{\circ}$.
## Step2: Set up the equation
We know that $a + 90^{\circ}+70^{\circ}=180^{\circ}$ (since the sum of angles on a straight line is $180^{\circ}$).
## Step3: Solve for $a$
$$
\begin{align*}
a&=180^{\circ}-(90^{\circ} + 70^{\circ})\
a&=180^{\circ}-160^{\circ}\
a&=20^{\circ}
\end{align*}
$$

# Answer:
$20$

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Step1: Recall the straight - angle property

Step2: Set up the equation

Step3: Solve for \(a\)

Answer: