Answer:
Yes
Step-by-step explanation:
It's right
Three noncollinear points are contained in one and only one plane -- flat plane postulate. If two points are in a plane, then the line containing the points is in the same plane -- plane intersection postulate.
Answer:
5= b 6=d
Step-by-step explanation:
Answer:
The measure of the sides is 20 cm.
Step-by-step explanation:
Opposite side of a parallelogram:
Opposite sides of a parallelogram are congruent, that is, they have the same measure.
Measures (2x+10) cm and (x+15) cm:
This means that:



2x + 10 = 2*5 + 10 = 10 + 10 = 20
The measure of the sides is 20 cm.