Search educational resources

Search

Menu

Sign In Try It Free
Discover
Solutions
- Educator Edition Save time lesson planning by exploring our library of educator reviews to over 550,000 open educational resources (OER).
- Learning Explorer An all-in-one learning object repository and curriculum management platform that combines Lesson Planet’s library of educator-reviews to open educational resources with district materials and district-licensed publisher content.
About
Pricing
School Access
- Your school or district can sign up for Lesson Planet — with no cost to teachers
  Learn More
Sign In
Try It Free

Create engaging lessons with

vetted educational resources— videos, interactives, games, lesson ideas, and more!

Start Your 10-Day Free Trial

Get Free Access for 10 Days!

Share on Facebook
Tweet This Resource
Pin This Resource
Link

Regents Exam Prep: Angle Sum & Difference, Double Angle Unit Plan

Regents Exam Prep: Angle Sum & Difference, Double Angle Unit Plan

Publisher

Oswego City School District

Resource Details

Curator Rating

Educator Rating

Not yet Rated

Grade

9th - 10th

Subjects

2 more...

Resource Type

Audiences

For Administrator Use

2 more...

Lexile Measures

Unit Plan

Regents Exam Prep: Angle Sum & Difference, Double Angle

Curated by ACT

The mathematics session examines angle sum, angle difference, double angle, and half angle formulas. The tutorial includes class notes, examples, and practice problems with solutions. The teacher resource investigates how the formulas can be used to create additional formulas.

3 Views 0 Downloads

Concepts

Show More Show Less

Additional Tags

angle difference formula, angle sum formula, double angle formula, half angle formula, oswego city school district, regents prep

Show More Show Less

Classroom Considerations

Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)

Start Your Free Trial

Save time and discover engaging curriculum for your classroom. Reviewed and rated by trusted, credentialed teachers.

See similar resources:

Instructional Video

SAT Prep: Test 2 Section 3 Part 4

SAT test-takers get to review median numbers, perimeters, right angles, slopes, and prime factorization in this video, which focuses on problems 13-16. Sal's even pace and methodical problem solving will bolster the confidence of even...

10 mins 9th - 12th Math

Instructional Video

SAT Prep: Test 7 Section 8 Part 2

Continuing his SAT review session, Sal explores problems with slopes, linear equations, and congruent angles. He begins problem 10 (geometry) but finishes the problem in the next video.

8 mins 9th - 12th Math

Instructional Video

SAT Prep: Test 5 Section 7 Part 5

Geometry problems on the SAT are often the most difficult for students to solve, let alone master. Focusing on several geometry-related skills (as well a few algebra problems), Sal makes this lesson a valuable resource for viewers who...

9 mins 9th - 12th Math

Instructional Video

SAT Prep: Test 6 Section 9 Part 2

With pen in hand and diagrams at the ready, Sal demonstrates problem-solving and test-taking skills in this informative video. Problems 7-9 involve inequalities, linear equations, and measuring angles in a right triangle.

9 mins 9th - 12th Math

Instructional Video

SAT Prep: Test 8 Section 2 Part 3

Sal deftly solves the straightforward algebraic equation in problem 9 in under fifty seconds. Additional problems involve points on a plane, algebraic word problems, geometric angles, and fractions, some of which he takes more time to...

9 mins 9th - 12th Math

Instructional Video

Triangle Angle Sum

Don't believe everything that you hear — make them prove it! The video shows two methods to prove the Triangle Angle Sum Theorem. The following two videos apply the theorem to finding missing angle measures.

4 mins 9th - 12th Math

CCSS: Adaptable

Regents Exam Prep Center: Geometric Constructions

Oswego City School District

Learn all about the basic geometric constructions in this test prep lesson. You will explore line segments and points, and understand key terms like the terms parallel and perpendicular. Construction activities and interactive online...

9th - 10th Math

Regents Exam Prep Center: Similarity of Triangles

Oswego City School District

Discover the world of "similarity" in this test prep tutorial on similar triangles. Detailed explanation of concept with examples, challenging interactive practice, and a classroom activity that integrates math and science.

9th - 10th Math

CCSS: Adaptable

Regents Exam Prep Center: Special Right Triangles 45, 45, 90

Oswego City School District

This Oswego City School District Regents Exam Prep tutorial shows two special formulas that are used to determined the measures of the legs of a 45-45-90 triangles. If you can't remember the formula, the tutorial gives you tips on other...

9th - 10th Math

Regents Exam Prep Center: Indirect Euclidean Proofs

Oswego City School District

This Oswego City School District Regents Exam Prep site shows you how to proof something by showing that it is false. This look at indirect proofs includes a practice and a teacher resource page, which features a warm-up activity.

9th - 10th Math

© 1999-2025 Learning Explorer, Inc.

Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

Health
Language Arts
Languages
Math
Physical Education

Science
Social Studies
Special Education
Visual and Performing Arts

View All Lesson Plans

Discover Resources

Our Review Process
How it Works
How to Search
Create a Collection

Manage Curriculum

Edit a Collection
Assign to Students
Manage My Resources

Contact Us Site Map Privacy Policy Terms of Use