POINT • POINT • CIRCLE

Both Points In A Circle, One Is The Centre

Number of solutions: 2

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Steps

  1. Given is the circle c, inside of which lie the points A and B. A lies in the centre of c
  2. Construct the perpendicular bisector of AB, f. The resulting circles' origins will lie on it.
  3. Construct a line parallel to f that goes through the point B, g. The points where g intersects c shall be named C and D
  4. Construct the perpendicular bisectors of BC (h) and BD (i). The points where they intersect f shall be named F and E, respectively.
  5. Draw the circles d and e:
  6. d has E as its origin, goes through the points A and B, the point of tangency with c is D
  7. e has F as its origin, goes through the points A and B, the point of tangency with c is C