Answer:
m<DCB = 84°
Step-by-step explanation:
ABCD is a parallelogram since it has two sets of parallel sides.
Opposite angles in a parallelogram are congruent.
Consecutive angles in a parallelogram are supplementary.
<DCB is consecutive to <D.
m<DCB + m<D = 180°
m<DCB + 96° = 180°
m<DCB = 84°
Answer: (b) exactly one plane contains a given line and a point not on the line.
Step-by-step explanation: The basic postulates of geometry are very-well known to all of us. For example-
(i) The intersection of two lines determines a point,
(ii) Two parallel lines give result to a plane,
(iii) A line and a point not on the line determines a plane, etc...
Thus, with the help of the third point, we can easily arrive at the conclusion that a given line and a point not lying on the line is contained in a plane. For example- see the attached figure, AB is a line and P is any point not on the line. They both contained in the plane ABC.
Hence, the correct option is (b).
Huh? Can you put a picture?
Answer:
yo that's too hard it should be 20 points