Geometry: Introduction to Geometry (Level 5 of 7) | Sets, Union, Intersection I

This video continues introducing the basic building blocks for the successful study of geometry. This video reviews the basic concepts associated with sets. In addition, this video goes over 6 examples involving the union and intersection of geometric figures.

#geometry #math #school

0:00 Introduction
0:19 Sets Review
3:03 Example 1: Identifying and Naming Lines
4:17 Example 2: Find Intersection of Lines
4:45 Example 3: Find Intersection of Ray and Line
5:41 Example 4: Find Union of Rays
6:32 Example 5: Find Intersection of Rays
7:22 Example 6: Find Intersection of Triangle and Ray

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[MathFortress]

0:19 Sets Review
3:03 Example 1
4:17 Example 2
4:45 Example 3
5:41 Example 4
6:32 Example 5
7:22 Example 6

[parkertoliver]

I can not thank you enough for your videos. My life has been nothing but a down hill spiral with math. Your videos are not overwhelming, they are quick to the point and your examples are the perfect for someone like me to fallow along.

[freed-indeed]

Question. In the discussion at 3min and 38 seconds do the lines names need the arrow(s) above them or are they simply DE, DB...?

[jingya]

On example 1, 3:40 I’m confused do I need to write all the lines examples? Like, do I need to write DE or DB or BD... all the or examples on test or quiz? Or I just need to pick the one I like instead of writing all these or examples down? Thanks

[derekwillis]

I'm confused on how on example 3 and how you got the answer: the parts they have in common is line bc, so why isn't that the answer and ray ac is? It would make sense if you're asking for a union, not intersection, right?

[nassircurrie]

Thank You For The Help With The Wonderful Examples, Really Helped My Learning Incredibly

[paragmehta]

For the last question at 7:20, why are all points within the triangle not considered part of the triangle? If that were the case, the answer for intersection will be segment DF. Thanks.

[jingya]

7:17 on example 5, can the answer be CA?

[goldenspace]

At 5:38 I didn’t really understand why the answer is AC when BC has no point on AB? I need help

[richpivo]

This lesson totally confused me. It’s incongruous.