Answer:Step-by-step explanation:oneFHS is a straight line. AssumptionFHS = 180 Straight lines = 180 degreesNHF + NHS = 180 degrees NH cuts the line at H. They add to 180NHF and NHS are supplementary Definitition supplementaryTwoACE and DCB are straight lines AssumptionThey cross at C Given ConstructionACB = DCE Vertical angles are equal ThreeAP = AP Reflexive property.FourA is a right angleB is a right angleRight angles = 90 degrees<A = <BFiveCM bisects AB GivenAM = MB Definition of bisect.