Find the base of an isosceles triangle if its lateral side is 15 cm and the bisector of the angle opposite the base is 12 cm.
| February 13, 2021 | education
Angle bisector, opposite bases., in isosceles. t-ke is the height and median.
AH² = AB² – BH² = 15² – 12² = 225 – 144 = 81 (cm²);
AH = HC = 9 cm; FC = AH + HC = 18 cm.
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