Use slopes to determine whether the lines are parallel, perpendicular, or neither. AB and CD for A(3,5), B(-2,7), C(10,5), and D(6, 15)

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

How do i do this activity, is appreciated

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x