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Basic Geometry Definitions

Core Standard: HSG-CO.A.1

Aligned To Common Core Standard:

High School Congruence- HSG-CO.A.1

Printable Worksheets And Lessons

  • A Circle And Lines Step-by-step Lesson-A circle encases parallel and perpendicular lines. Wow, what possibilities!

  • Guided Lesson - Naming angles, intersecting lines, right angles, and the difference between parallel and perpendicular.

  • Guided Lesson Explanation - This is explained in a more round about away than other sections are worded.

  • Practice Worksheet - I was able to parlay ten questions from two geometric drawings. We focus on the same skills you will find in the standards.

  • Matching Worksheet - Note to self, I forget to add the distance along lines and circles that the standard asks for. Include that in five packs.

AnswersAnswer Keys

View Answer Keys- All the answer keys in one file.

More Worksheets (Click Here to Upgrade)

Homework Sheets

It's all about calling out lines. Perpendicular versus parallel lines, intersecting lines and naming angles.

Practice Worksheets

We give you a basic geometric layout and ask you to apply your geometry vocabulary.

Math Skill Quizzes

These focus a bit more on naming angles than naming lines.