As shown in the figure, ABC three points are the three vertices of a parallelogram with AC as the edge. Their coordinates are (2, - 1) (6, - 1) (0,5) (1) to find the parabola of ABC three points Analytic formula (2) draw a parallelogram in line with the meaning of the problem, and directly write out the coordinates of the fourth vertex D (3) under the conditions of (1) and (2), make a parallel line of X axis through point C, intersect a parabola, and another point is e, which is to find the circumscribed circle radius of triangle DBE

As shown in the figure, ABC three points are the three vertices of a parallelogram with AC as the edge. Their coordinates are (2, - 1) (6, - 1) (0,5) (1) to find the parabola of ABC three points Analytic formula (2) draw a parallelogram in line with the meaning of the problem, and directly write out the coordinates of the fourth vertex D (3) under the conditions of (1) and (2), make a parallel line of X axis through point C, intersect a parabola, and another point is e, which is to find the circumscribed circle radius of triangle DBE

Let y = ax ^ 2 + BX + C be the parabola passing through three points a, B and C, and the equation system: - 1 = 4A + 2B + C-1 = 36a + 6B + C5 = C is obtained. The solution is: a = 1 / 2, B = - 4, C = 5, ｜ y = 1 / 2x ^ 2-4x + 5

Point a (0,0) B (4,0) C (2,3), draw a parallelogram with ABC three points as the vertex, and find out the coordinates of point D

There should be three answers. First of all, this question should be clear: "several quadrilaterals can be drawn on the basis of triangles". These three sides can be used as diagonals to draw quadrilaterals. There are three kinds of answers. The answers are: (6,3); (- 2,3); (2, - 3)

Given three points a (0,4) B (- 3,0) C (3,0), now ABC draws parallelogram for vertex. Please write the coordinates of the fourth vertex d according to the coordinates of ABC three points

There are three D points