89 results
Free high school geometry lectures
High School Geometry Transformations Math Unit
A high school level Transformations unit for a geometry course. Individual lessons/worksheets define and give detailed examples of reflections, rotations, translations, and dilations. Each worksheet/lesson allows space for definitions of each type of transformation as well as examples of their use on a coordinate grid. Properties of transformations are also investigated. A summary lesson on transformations of triangles and quadrilaterals in the coordinate plane is also included. The Reflect
Subjects:
Grades:
9th - 12th
Types:
Patterns and Inductive Reasoning
This is a 13 slides Power Point presentation that covers Patterns and Inductive Reasoning. It contains two objectives:
- Find and describe patterns.
-Use inductive reasoning to make real-life conjectures.
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My Quizzes:
4th Grade Word Problems Quiz (10 Q)
Equations and Inequalities Quiz (20 Questions)
An Introduction to Functions Quiz (11 Questions)
Evaluate Expressions Quiz (22 questions)
Pairs of Lines Quiz (17Q)
Types of Angles Quiz (10 Q)
Increasing Growth Pat
Subjects:
Grades:
4th - 12th
Introduction to Trigonometry for Geometry Students
This collection is excellent for a slow learning class or if you must teach this material in a very short amount of time due to the amount of time you have left to teach before exam testing. It includes notes for student, teacher notes for use on a document camera or overhead projector, warm-up, and daily assignment each day for students. This is two days worth of assignments. The answer key for teacher notes and student assignments is included at the end. Topics covered: Identify opposite a
Subjects:
Grades:
8th - 12th
Types:
Pythagorean Theorem Power Point Presentation by Mark Robuck
This is a Power Point presentation by Mark Robuck on the Pythagorean Theorem. There are 20 slides in the presentation. This covers where the name came from, a basic proof, how to use the formula, and Pythagorean triples.
Congruent Triangles
Triangles:48 slide power point includes defining and classifying triangles. Presentation on how triangles can be found congruent (SSS, ASA, SAS, AAS and HL) and why SSA does not work. Four proofs on congruent triangles and four proofs using CPCTC. All proofs have animated statements and reasons, you control when they are shown. All sides can be edited to fit you specific needs.
Subjects:
Grades:
7th - 12th
Exterior Angle Theorem Lecture notes, Worksheet
Exterior Angle Theorem
- Lecture Notes
- Worksheets
Teach less, Learn more
Viva Math!
Subjects:
Grades:
6th - 11th
Types:
Angle Relationships with Lines Guided Notes and Video Lecture Link
Video and guided notes (in PDF form) for angle relationships including vertical angles, linear pairs, and angle relationships formed when two parallel lines are cut by a transversal. The notes are designed for students to use digitally using free PDF editing applications such as Kami, but they may also be printed. The notes are color coded - students complete any yellow sections from the video examples and students complete any green sections independently as part of the "Your Turn". The notes
Grades:
9th - 12th
Types:
CCSS:
Midpoint of a Line, Translation and Reflection of 2D Shapes. PPT File
This is a power point presentation that covers the topic midpoint of a line segment, the coordinate of a point that lies a fraction of a line segment. Translation of 2D shapes with examples that cover performing the translation and describing the translation.Reflection of 2D shapes with examples that cover performing the reflection and describing the reflection.
Parallel & Perpendicular Lines Guided Notes & Lecture Video Link (PDF + Digital)
Video and guided notes (in PDF form) for writing equations of parallel and perpendicular lines. The notes are designed for students to use digitally using free PDF editing applications such as Kami, but they may also be printed. The notes are color coded - students complete any yellow sections from the video examples and students complete any green sections independently as part of the "Your Turn".Video covers the notes and explains the following examples:Slope criteria for parallel and perpen
Grades:
9th - 12th
Types:
CCSS:
GEOMETRY - Notes Guide - 1.1 Patterns & Inductive Reasoning
Note-taking Guide perfect for use as 1st day or 2nd day use when teaching a lesson. Also perfect to use with simple projection on a whiteboard and/or SMART technology.
Subjects:
Grades:
9th - 10th
Partitioning Segments Guided Notes and Lecture Video Link (PDF & TpT Digital)
Video and guided notes (in PDF form) for finding the partition point of a line segment. The notes are designed for students to use digitally using free PDF editing applications such as Kami, but they may also be printed. The notes are color coded - students complete any yellow sections from the video examples and students complete any green sections independently as part of the "Your Turn".Video covers the notes and explains the following examples:Review of ratios and fractions for line segmen
Grades:
9th - 12th
Types:
CCSS:
Conditional, Converse, Inverse, Contrapositive & Biconditional Statements
Klose notes for students to complete with examples and writing assignment.
Students learn how to identify the hypothesis and conclusion of a statement and write the converse, inverse, contrapositive, and biconditional statements of a conditional statement.
This note set is good for shortening the time spent on note-taking and giving students more time to interact with new material. This lesson introduces p and q notation and should be used before introducing the Law of Detachment and the Law
Subjects:
Grades:
9th - 12th
Sequences of Transformations Guided Notes and Video Link
Guided notes (in PDF form) and bonus video lecture link for function notation of transformations, sequences of transformations, definition of congruence in terms of rigid motions, and rotational symmetry and lines of symmetry. The notes are designed for students to use digitally using free PDF editing applications such as Kami, but they may also be printed. The notes are color coded - students complete any yellow sections from the video examples and students complete any green sections independe
Grades:
9th - 12th
Types:
CCSS:
Similar Triangles: Video with Notes -Distance Learning
For students to learn how to calculate missing angles and sides of similar triangles, they can watch the 10 minute YouTube video lesson. They can print out and fill in the attached note page with blanks. (8th grade or HS Geometry)This could work for students who were absent, or are learning from home.The video link is: https://youtu.be/Wf4eNxOI0x4The PowerPoint is available on TpT.
Subjects:
Grades:
8th - 10th
Types:
CCSS:
Trigonometry identities Study Sheet
A cheat sheet of hexagon shortcuts for trigonometric identities provides a compact and convenient reference guide for various trigonometric identities arranged in the shape of a hexagon. This creative visual layout helps students and professionals quickly recall and apply these identities. By organizing these identities within the hexagon structure, individuals can easily navigate through the relationships between trigonometric functions and quickly reference the appropriate identity for their c
Subjects:
Grades:
9th - 12th
Types:
Angles of Triangles: Video with Notes -Distance Learning
For students to learn how to calculate interior and exterior angles of triangles, they can watch the 8 minute YouTube video lesson. They can print out and fill in the attached note page with blanks. (8th grade or HS Geometry)This could work for students who were absent, or are learning from home.The video link is: https://youtu.be/cY2VocVXTGcThe PowerPoint is available on TpT.
Subjects:
Grades:
8th - 10th
Types:
CCSS:
Parallel Lines & Transversals (with equations) PDF & Google Slides Notes
These notes explain how to solve for angles formed by parallel lines cut by a transversal when there are equations. It is intended to be used after already introducing this topic and the special angle pairs formed when parallel lines are cut by a transversal.(The google slides link can be found on the last page of the pdf)
Subjects:
Grades:
8th - 12th
Trig Ratios Foldable
Cut and Paste Foldable
• Use Printable Base Page
• OR Glue to Notebook Paper
• SOHCAHTOA
• Examples
Subjects:
Grades:
8th - 12th
Congruent Triangle Unit
This unit was designed for an informal Geometry class. It does not feature proof. Instead, it establishes SSS, SAS, ASA, and AAS through inductive reasoning. This unit could be a good introductory supplement for a full Geometry class.
Subjects:
Grades:
8th - 10th
Law of Sines
Fun presentation on the Law of Sines. Includes ASA, SAA, and SSA (ambiguous case). Includes visuals, example problems, definitions of new words, and a link to a Blooket game. Also includes the formula for calculating the area of an oblique triangle. Very easy to edit to make modifications for your class.I split this into three different lessons that were 50 minutes each. The first lesson was an introduction to Law of Sines with the ASA and SAA cases. The second was focused on the ambiguous case
Subjects:
Grades:
8th - 12th
CCSS:
Angle Addition Postulate Guided Notes & Teacher Notes
This item is included in the paid item listed in the store. It is the teacher notes and the preview is the blank guided notes.
Drawing Transformations: Video with Notes -Distance Learning
For students to learn how to draw transformations (translations, reflections, rotations, and dilations) on a graph, they can watch the 12 minute YouTube video lesson. They can print out and fill in the attached note page with blanks. (8th grade or HS Geometry)This could work for students who were absent, or are learning from home.The video link is: https://youtu.be/kviVkGAfefoThe PowerPoint is available on TpT.
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