Given the line segments a, m, h, calculate △ ABC, such that BC = a, the height above it is h, and the central line of AC is m. (draw with ruler and compasses, and write the drawing steps)
Take B as the center of the circle and m as the radius to make the circle. Take any diameter and record it as de. use a compass to take DF = h on the circle and connect DF and ef. Make a straight line BG through B to make BG ‖ EF. Cut a line BC on the straight line BG to make BC = a, connect CD and extend it. Use a compass to cut DA on the extension line of CD to make Da = DC and connect AB to make a triangle ABC