WHAT IS A LINE?
rnWHAT IS AN ANGLE?
A line is a collection of points along a straight path that goes on and on in opposite directions. A line has no endpoints.
An angle is two lines that meet at an endpoint called a vertex. An angle can be named by the three letters that form it or by the letter that is at its vertex. An acute angle is one that measures less than 90 degrees with a protractor - that is how much the angle is open or the lines diverge from the vertex.
This would be A on the angle. | ||
Vertex or Point B of the angle | This would be C on this angle | |
Acute Angle ABC or Angle B |