1. 7.1 Introduction to geometry
Secondary Math 2
7.1 Introduction to geometry

2. Warm–UP: Which one does not belong – why?

3. Reminders ALEKS – 60% Mastered (369 topics)
10 topics/1 hour weekly
Knowledge Checks open every Wednesday-Friday
s Weekly - Blog Weekly: blog.wsd.net/kariggs/
Missed class?
Check the blog
Check your student
Did you miss a quiz? (come take it!)
YOU are responsible for what you missed!!!
Take notes (notebook checks on test days)
Use on review days

4. What will you learn?
Be able to identify, name, and create points, segments, rays, lines, and planes.

5. A, B, C Points Basic Unit of Geometry Has no size
Named using capital letters
A, B, C M B R

6. a whole bunch = infinite
If we get a whole bunch of points together and they are straight, we make a line!!! B C S P M L
a whole bunch = infinite

7. 𝐴𝐵 𝑆𝑉 𝐾𝑇 Lines Made up from an infinite number of points
Extend in both directions FOREVER
Named by two points on the line
Written with a symbol
𝐴𝐵 𝑆𝑉 𝐾𝑇 V T

8. Collinear
Points on the same line
Noncollinear
Not on the same line

9. 𝐶𝐵 𝐾𝑀 𝑈𝑉 Rays The first letter is always the endpointC V X
Line that ends on one side
Extend in one direction FOREVER!!
Named by the endpoint and one other point on the ray
Written with a symbol
𝐶𝐵 𝐾𝑀 𝑈𝑉
The first letter is always the endpoint

10. 𝐵𝐻 𝐷𝐺 𝑃𝑉 Line Segment The piece of line between two points
Could be a part of a line, a ray, or alone
Named by the endpoints
Written with a symbol
𝐵𝐻 𝐷𝐺 𝑃𝑉 C V X

11. ABC JKM R Plane Flat surface Extends FOREVER
Named by 3 points in the plane
Or an uppercase cursive letter
ABC JKM R

12. Coplanar Noncoplanar Points on the same plane
Points not on the same plane

13. You KNOW planes!!! The Coordinate Plane OR XY Plane
Grid to map points, lines, rays, etc.

14. Quadrants on the Coordinate Plane
2 = II
1 = I
3 = III
4 = IV

15. Name points (x, y)