Expand your knowledge base with the help of IDNLearn.com's extensive answer archive. Our Q&A platform is designed to provide quick and accurate answers to any questions you may have.
Answer:
a = 20°
Step-by-step explanation:
The sum of the interior angles of a triangle = 180°
85° + 75° + a = 180°
160° + a = 180°
a = 180° - 160°
a = 20°
Hope this helps