Answer:
The first row
Step-by-step explanation:
Letters A,B,C,D
Step-by-step explanation:
mXYZ+mXYW=180°(being straight angle)
mXYW =180-115
mXYW=65
now,
mXWY+mWXY+mXYW=180°(sum of angle of triangle)
mXWY=180-110
mXWY=70°
hope it helps.
6 + (-3) would be the same as just saying 6-3 which would be equal to positive 3
A Pentagon
i hoped this helped :)