Question

Look at the figure and answer the questions:


(1) Name the collinear points.
(2) Write all the groups of non-collinear points.
(3) Name the concurrent lines and their points of concurrence.

Answer 1

(1) The collinear points are B, C and D because a single line can be drawn passing through these points.
(2) The non-collinear points are (A, B, C), (A, C, D), (A, B, C, D) and (A, B, D) because straight lines cannot be drawn passing through them.
(3) Lines AB, AC and AD are concurrent lines; their point of concurrence is A.