1, Which one of the following statement is true?
A Quadrilateral is a four-side geometric figure bounded by line segment.
B. Diagonal is a line segment that connects two opposite vertices.
C. Adjacent sides are sides of geometric figure that have a common end point
D. All of the above.

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.