Points, lines, and planes are the basic building blocks of geometry. A point has no size, a line is made up of points and has no thickness or width, and a plane is a flat surface made up of points that extends infinitely in all directions. The document then provides an example of how points, lines, and planes are represented in a cubist-style chair designed by Garrit Rietveld. It explains how to create points, lines, and planes using an interactive geometry software. An intersection is the point or set of points where two figures meet, such as a single point where two lines intersect, a single point where a line intersects a plane, or a single line where two planes intersect.

1. Instructional Material Lesson 1 - Student Lesson 1.1
Geometry Foundations Notes
POINTS, LINES, AND PLANES
Points, lines and planes are the most basic building blocks of
geometry. They are considered to be ___________________
because they can really only be explained using examples and
diagrams.
A ____________ is simply a location. It has no size.
A __________ is made up of points and has no thickness or
width. Points on the same line are __________________.
A _______________ is a flat surface made up of points. A plane extends infinitely in all directions.
Points that lie on the same plane are ___________________.
Point Line Plane
Model
Named By
Facts

2. Instructional Material Lesson 1 - Student Lesson 1.1
Geometry Foundations Notes
Now that we know how these figures work, lets look at an example in the real world.
Garrit Rietveld, a Dutch artist, represented points, lines and planes in this cubist-stlye chair that he
designed.
Can you identify the planes?
The lines?
The points?
Now that we know what points, lines, and planes are, lets examine how they interact with each
other.
Please go to this website: https://www.geogebra.org/
Activity: Now that we have gone over how to use geogebra, you can now create your own points,
lines, and planes. On your own, go ahead and make as many points, lines, and planes as you want
for 5 minutes.
An ___________________________ is the point or set of points in which two figures meet.
When two lines intersect, they meet at a single _________________.
When a line intersects a plane, they meet at a single ___________________.
When two planes intersect, they meet at a single __________________.

3. Instructional Material Lesson 1 - Student Lesson 1.1
Geometry Foundations Notes