Given the following coordinates of A (3,5) B (8,10) and C (2,4), rewrite the new coordinates of A’ B’ and C’ after a reflection over the y-axis.

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?