O(0,0) construction given A (1, 2) ,B (3,1) (2019 Kyiv City MO Round2 7.3.1)
Source:
September 17, 2020
geometryconstructionanalytic geometrypointscoordinate geometry
Problem Statement
The teacher drew a coordinate plane on the board and marked some points on this plane. Unfortunately, Vasya's second-grader, who was on duty, erased almost the entire drawing, except for two points and . Will the excellent Andriyko be able to follow these two points to construct the beginning of the coordinate system point ? Point A on the board located above and to the left of point .