I got the same book with those same answers ima bout to get it ok
The answer will be B because all three angles of the triangles add up to180 degrees, and we already know the total of two other angles are 100 degrees, which made the unknown angles have 80 degrees. Hope it help!
The answer is kindly 21 (100% correct)
Answer:
a=-1
If you need explanation please comment
Answer:
2nd option on the top right
Step-by-step explanation: