the angle by which ab turns clockwise about point b to coincide with bc is ? degrees. if from point b, a point e is drawn directly opposite point c so that b, e, and c are on the same straight line, the angle by which ab turns counterclockwise to coincide with be is ? degrees.

fill in the ? marks

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

How many glue sticks are in a basket containing 96 scissors, if the ratio of glue sticks to scissors is 19 to 57.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).