Which quadrilateral must have four congruent angles? a. a rhombus b. a trapezoid c. a rectangle d. none of the above

The correct answer to this question is:
C.a rectangle 

C. a rectangle because all four angles are 90 degrees.

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.