math point line rays angle

1. Introduction to
Points, Lines,
Rays, and
Angles
Grade 3
Mathematics
INSPIRED BY

2. • Points, line segments, rays, lines,
and angles
• Real-life examples of points, line
segments, rays, lines, and angles
• Parallel and perpendicular lines
Lesson
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3. Without lifting your pen, how will
you connect all these dots using only
FOUR straight lines?
Connect the
Dots!

4. In 1914, Sam Loyd released this
puzzle in his book “Cyclopedia of
Puzzles.“
To solve this one, we have to draw
outside of the box!
In this lesson, we'll learn about
dots/points, lines, and more.
Connect the
Dots!

5. At the end of this lesson, we'll be able to:
Learning
Outcomes
Differentiate points,
lines, line segments,
and rays from each
other
Recognize points,
line segments, rays,
lines, and angles in
real-life examples
Compare parallel and
perpendicular lines

6. Point
Did you notice that
you always begin
with a point when
drawing or
writing?
A point is a single location in space.
It doesn't have any size, length, or
width. We show a point by drawing a
tiny dot.

7. From a point, we can draw a line
segment, a line, a ray, and an
angle.
Identify which
is which in
this example?

8. connects two points
and has a length,
but no width
Line Segment
What's the difference?
extends infinitely
in both directions,
has no bends, and
has no width
Line
starts at a point and
extends
continuously in one
direction
and has no defined
length or width
Ray
forms between two
rays or line
segments that
share a common
endpoint
Angle

9. Find the following in the figure:
• a point
• a line segment
• a ray
• a line
• an angle
Let's
investigate
and discover!

10. Now that you're familiar with a
point, a line segment, a ray, a
line, and an angle, let's explore
parallel lines and perpendicular
lines!
Great Job!

11. Two lines that never intersect while
moving in the same direction
Parallel Lines
Parallel and
Perpendicular Lines
Formed when a pair of lines
intersect at a right angle
Perpendicular Lines

12. Recap
a single
location in space
Point
connects two points
Line
Segment
extends infinitely
in both directions
Line
starts at a point and
extends
continuously in one
direction
forms between two
rays or line
segments that
share a common
endpoint
Ray Angle
Parallel Lines Perpendicular Lines
Two lines that never
intersect
Formed when a pair of
lines intersect at a right
angle

13. Teacher Tip: Double-click to customize this poll or quiz,
or go to the Elements Tab for more options!
Think fast!
Recall what you learned and
answer this question.

14. Exercise your creativity and draw
real-life examples showcasing a
point, line segment, ray, line, and
angle.
Homework

15. Mathspace. "9.01 Points, lines and rays | Grade 4 |
Common Core - 2022 Edition." Accessed 19 June,
2023, mathspace.co/textbooks/syllabuses/Syllabus-
1090/topics/Topic-21204/subtopics/Subtopic-
274659.
Reference
Mathspace. "9.02 Angles within a circle | Grade 4 |
Common Core - 2022 Edition." Accessed 19 June,
2023, mathspace.co/textbooks/syllabuses/Syllabus-
1090/topics/Topic-21204/subtopics/Subtopic-
274651.

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