ACTIVITY 1: LET'S PRACTICE! Direction: Refer to the figure at the right and answer the following completely. 1. Name three collinear points. 2. Name two coplanar points. 3. Name three pairs of intersecting lines. 4. Name two coplanar lines. 5. Name three concurrent lines.

The points A, B and C lie on the line m. They are collinear. • The points D, B and E lie on the line n. They are collinear. • There is no line that goes through all three points A, B and D. So, they are not collinear.

Answers in number 2

The points P, Q, and R lie in the same plane A. They are coplanar.

Answers in number 3

set of lines or curves are said to be concurrent if they all intersect. In the figure below, the three lines are concurrent because they all intersect at a single point P. ... The point P is called the "point of concurrency".

Answers in number 4

Coplanar lines are lines that lie on the same plane. If coplanar points are points that lie along the same plane, then the same applies for coplanar lines: they lie also share the same plane.

Answers in number 5

Concurrent Line Segments and Rays When three or more line segments, intersect each other at a single point, then they are said to be concurrent line segments. See the figure below, where AB, CD and EF are three line segments and are intersecting each other at one point O.