Mathematics
In the adjoining figure, write
(i) all pairs of parallel lines.
(ii) all pairs of intersecting lines.
(iii) concurrent lines.
(iv) collinear points.
Answer
(i) Lines that never meet are parallel lines.
∴ Pairs of parallel lines are l, m ; l, n; m, n.
(ii) Lines that cross each other are intersecting lines.
∴ Pairs of intersecting lines are l, p ; m, p ; n, p ; l, q ; m, q ; n, q ; l, r ; m, r ; n, r ; p, q ; p, r ; and q, r.
(iii) Three or more lines passing through the same point are concurrent.
∴ Lines n, r and q are concurrent.
(iv) Collinear points are points lying on the same line.
∴ Collinear points are A, B, C ; A, H, I, D ; D, E, F, G ; B, H, F and C, I, E.
Related Questions
Use the adjoining figure to name:
(i) Line containing point E.
(ii) Line passing through A.
(iii) Line on which point O lies.
(iv) Two pairs of intersecting lines.
From the adjoining figure, write
(i) collinear points.
(ii) concurrent lines and their points of concurrence.
Count the number of line segments drawn in each of the following figures and name them:
