Answer:
2. m∠1 = 129°
3. m∠1 = 37°
Explanation:
We know that the sum of all interior angles in a triangle adds up to 180°.
2. To find measure 1 for problem 2, we can see that ∠1 is a supplementary angle with the interior angle in side
180°-(67°+62°)
180°-129°
51°
Now that we found the missing interior angle, we can find ∠1
180°-51° = 129°
m∠1 = 129°
3. Same thing as well for this problem except we're going to be going reverse we need to find the supplementary angle first, then we can find m∠1.
180°-152° = 28°
Now that we found the interior angle, we can find m∠1
180° - (115°+28°)
180°-(143°)
37°
m∠1 = 37°