20 points which of the following must be true if segment cd is the perpendicular bisector of segment ab? a. segments cd and ab form a ninety degree angle b. segment ad is congruent to segment cd c. segment ab is the perpendicular bisector of triangle abc. d. angle c must be 60 degrees. e. the two smaller triangles are acute. f. point c is the circumcenter of the larger triangle.

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.