How is symettry used when making a bridge? does it ? why or why not

Mr. johansen is cutting construction paper for an art project. he has 24 students, and six pieces of construction paper. how much paper will each student receive?

Answer for 10 points show work you guys in advanced < 3

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?