Which of the following is always true about opposite angles of a cyclic quadrilateral?
a they add up to 180 degrees
b they are congruent
c they add up to 90 degrees
d they have no relationship

Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. shania found the middle number of her scores. which type of measure did she find?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.