Chapter 1 – Basic Concepts in Geometry
Practice set 1
1. Look at the figure alongside and name the following:
(1) Collinear points
Ans:
Point M, Point O and Point T
Point R, Point O and Point N.
(2) Rays
Ans: Ray OP, ray OM, ray OR, ray OS, ray OT and ray ON.
(3) Line segments
Ans: Seg MT, seg RN, seg OP, seg OM, seg OR, seg OS, seg OT and seg ON.
(4) Lines
Ans: Line MT and line RN.
2. Write the different names of the line.
Ans: The different names of the given line are:
Line l, line AB, line AC, line AD, line BC, line BD and line CD.
3. Match the following:
Ans:
4. Observe the figure below. Name the parallel lines, the concurrent lines and the points of concurrence in the figure.
Ans:
Parallel Lines:
Line b, line m and line q are parallel to each other
Line a and line p are parallel to each other.
Concurrent Lines and the Point of Concurrence:
Line AD, line a, line b and line c are concurrent lines. Point A is their point of concurrence.
Line AD, line p and line q are concurrent lines. Point D is their point of concurrence.