Solve Problems Using Coordinates

Interactive macro-enabled MS-Excel spreadsheet. Contents: Find midpoint m of a line joining a point to another (1ˢᵗ quadrant). Find midpoint m of a line joining a point to another (4 quadrants). Find a point dividing a line joining 2 others in a ratio (1ˢᵗ quadrant). Find a point dividing a line joining 2 others in a ratio (4 quadrants). Find 3 positions for a parallelogram’s 4ᵗʰ vertex given 3 vertices. Find 3 vertices on 3 shapes given 2 vertices of a congruent shape. Find point of intersection P of the two diagonals of a quadrilateral. Find a quadrilateral’s 4ᵗʰ vertex & area using symmetry & 3 vertices. Find a tilted square’s 2 missing vertices & centre C given 2 vertices. Find an isosceles triangle’s 3ʳᵈ vertex given 2 vertices & a region. Find 2 points defined by the ratio of their distances along a line. Find 3 points defined by the intersection & midpoints of 2 lines. Find l, w, u, v, total perimeter P & area A of a compound shape.