Geometry Curriculum Unit 9: Right Triangles and Trigonometry

Geometry Unit 9 is a complete, editable unit on right triangles and trigonometry, with guided notes, scaffolded practice and activities. Students learn the Pythagorean Theorem, special right triangles, trigonometric ratios, angles of elevation and depression, and the Laws of Sines and Cosines through a mix of notes, worksheets, puzzles, task cards and assessments.

You can teach it as-is. It is also fully editable, so you can adjust content, pacing and examples for your students.

What’s included

• Unit prep materials: pacing guide, vocabulary lists, pre-assessment, warm-ups, exit tickets and lesson plan templates
• 6 complete lessons, listed below
• Assessments: quizzes, end-of-unit study guide and unit exam
• Answer keys for all practice pages, activities and assessments

Lessons in the unit

1. The Pythagorean Theorem
2. Special Right Triangles
3. Trigonometry
4. Angles of Elevation and Depression
5. Law of Sines
6. Law of Cosines

Activities included

The unit comes with these activities, a mix of scavenger hunts, puzzles, coloring and mazes:

• Angles of Elevation and Depression Puzzle
• Trig Ratios Maze
• Trigonometry Scavenger Hunt
• Law of Sines and Cosines Task Cards
• Trigonometry Ratios Coloring Activity
• Special Right Triangles Picture Puzzle
• Pythagorean Theorem Partner Check

Good to know

Lessons, practice, activities and assessments are organized in one place. Prep is low, and the slides, notes and worksheets can all be adapted to your class.

Quick facts

• Topic: right triangles and trigonometry
• Grades: 8–11
• CCSS: 8.G.B.6, 8.G.B.7, 8.G.B.8, HSG-SRT.B.4, HSG-SRT.B.5, HSG-SRT.C.6, HSG-SRT.C.7, HSG-SRT.C.8, HSG-SRT.D.9, HSG-SRT.D.10, HSG-SRT.D.11, HSG-MG.A.1, HSG-MG.A.3
• Answer key: included

Free resources

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Terms of use

By purchasing this product, you own a license for one teacher only for personal use in their own classroom. Licenses are non-transferable and therefore can not be passed from one teacher to another. If the teacher who purchased this license leaves the classroom or changes schools, the license and materials leave with that teacher. No part of this resource is to be shared with colleagues or used by an entire team, grade level, school or district without purchasing the correct number of licenses. If you are a coach, principal or district interested in transferable licenses that would accommodate yearly staff changes, please contact me for a transferable license quote at lindsay@beyondtheworksheet.com.

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