1. Definition of Parallelogram
2. Angle 2 plus Angle 3 is 180=Def of Supple
3.Angle Congruence Postulate
4. Angle 1 and Angle 3 equal to 180
Answer:
x=30
(Option 2)
Step-by-step explanation:
Well if the <1+<2=180 then you can put the equation as 4x+10+x+20=180. We can simplify that to be 5x+30=180. Minus 30 from both sides: 5x=150; x=30
Answer:
Step-by-step explanation:
56 divided by 15 equals 3.5, so it's 3.5:1
