Answer:
4
Step-by-step explanation:
The factors are:
1, 2,4
Answer:
A. 160
Step-by-step explanation:
Supplementary angles add to be 180. Subtract 20 from 180 and you get 160.
Answer:
129 degrees
Step-by-step explanation:
The sum of all the angle of a quadrilateral is always 360 degrees, 51+90+90+129=360