Question

9. Define lines and angles.
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Answer 1

Answer:

In geometry, a line can be defined as a straight one- dimensional figure that has no thickness and extends endlessly in both directions. It is often described as the shortest distance between any two points. Here, P and Q are points on the line. Fun Facts .In geometry, an angle can be defined as the figure formed by two rays meeting at a common end point. An angle is represented by the symbol ∠. ... Angles are measured in degrees, using a protractor.

Step-by-step explanation:

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Answer 2

Answer:

Considered as a breadth less length by Euclid, lines form the basis of Euclidean geometry. ... When two rays (part of a straight line) intersect each other in the same plane, they form an angle. The point of intersection is called a vertex.