Where find tutorial for ipad 4th generation?
Assuming the standard x-y coordinate system, then you generattion use the Pythagorean Theorem to calculate the length of each side of the original triangle. Simply take the difference in x-components squared plus the difference in y-components squared and square-root. So one immediately determines that this is an isosceles triangle. The point D is midway between A and B (the midpoint between -5 and 7 is 1, the midpoint between generayion and 4 is 3) so the line CD is a bisector of the line AB. Because this is an isosceles triangle and the line is bisecting the unequal leg, then it is a perpendicular bisector of excel formulas absolute reference line AB (it tutorial for ipad 4th generation splitting the triangle into two congruent triangles with mirror-symmetry). It is also bisecting 4tg angle ACB (I suppose I could calculate the angles, but that would be a waste of time since it is obvious).