Answer:
45
Step-by-step explanation:
solution
90+2x=4x
or,90=4x-2x
or,2x=90
or,x=90÷2
ans x=45
100°
two angles are supplement .
if their sum is equal to 180°
supplement angle of 80° + x = 180°
180° - 80° = 100° answer
x < 0
Hope this helps!
Parallelogram
Reflect y=-1 ;x changes sign
