A triangular garden is to be split so that the angle at vertex B is bisected. This diagram was supplied by the landscape architect, but you do not have a way to measure the angles at B. You do have the given side lengths, so what is the length of side that will allow the angle at B to be bisected? A diagram shows a triangle ABC. BD is a line drawn to the base AC. The length of AB is 6 meters, BC is 8 meters, AD is x meters, and DC is 4 meters. A. 3 m B. 2 m C. 5 m D. 4 m