Mat_3r_UD1_Presentation

1. Unit 1
LINESby MariaAdrover
CEIPCALONGE
Geometry 3rd
_ Unit 1_Lines

2. STRAIGHT LINE
A straight line is a line that does not curve.
A line extends in both directions without end (infinitely)

3. RAY
A ray is a line with a start but without an end.
The point that starts a half-line is called origin.

4. SEGMENT LINE
A line segment is the part of a line connecting
two points.
It has definite end points.

5. PARALLEL LINES
Two lines are parallel if they never meet. They are
always the same distance apart

6. INTERSECTING LINES
Two lines are intersecting if they meet in a point and
form 4 angles.

7. PERPENDICULAR LINES
If the lines make 4 right angles (90º) when they
meet in a point, then they are perpendiculars.