Answer:
140°
Step-by-step explanation:
Given:
Dana draws a triangle with one angle that has a measure of 40∘.
Question asked:
What is the measure of the angle’s adjacent exterior angle?
Solution:
As we know:
Sum of the adjacent interior and exterior angles is 180°.
Interior angle = 40°
Adjacent exterior angle = ?
Interior angle + Adjacent exterior angle = 180°
40° + Adjacent exterior angle = 180°
By subtracting both sides by 40°
40° - 40° + Adjacent exterior angle = 180° - 40°
Adjacent exterior angle = 140°
Therefore, the measure of the angle’s adjacent exterior angle will be 140°.
