2013 · Q84
Let ABC be an equilateral triangle. If the side BC is produced to D so that BC = 2CD, then AD² is equal to
Elementary MathematicsGeometry
- A3CD²
- B4CD²
- C5CD²
- D7CD²
Explanation
AD²=7CD² by Stewart/coordinates. Answer D.
Let ABC be an equilateral triangle. If the side BC is produced to D so that BC = 2CD, then AD² is equal to
Explanation
AD²=7CD² by Stewart/coordinates. Answer D.