This document defines and describes different types of lines and angles. It explains that lines can be rays, segments, parallel, or perpendicular and defines each type. Lines extend in opposite directions and are made up of points. The document also defines right, obtuse, and acute angles and explains their degree measurements. It includes questions to check the reader's understanding of lines and angles.

1. Lines and
Angles
Ms. Ghio
3rd grade

2. Lines
Lines
 Lines
 Rays
 Segments
 Parallel lines
 Perpendicular lines
 Intersecting lines
 Point
 Midpoint

3. Lines
 Lines are a straight set of points that extend
(stretch) in opposite directions.
 Lines are everywhere!

4. Rays
 A ray is part of a line
that starts at an end
point and extends in
the opposite
direction.

5. Segments
 A segment is part of a
line that starts and
ends between two
endpoints.

6. Parallel Lines
 Parallel lines are two
or more lines beside
each other that never
intersect.

7. Perpendicular Lines
 Perpendicular lines
are lines that intersect
at square corners.

8. Intersecting Lines
 Intersecting lines meet
at a common point.

9. Quiz: What do you know?

10. What type of lines do you see?

11. Angles
 Right
 Obtuse
 Acute

12. Right Angle
 A right angle is
always 90 degrees
and forms a square
in the corner.

13. Obtuse Angles
 Obtuse angles
are greater than
a right angle.

14. Acute Angles
 Acute angles are less
than right angles.

15. What types of angles do you see?