Interactive
Curated OER

Triangle Problems - Find the Height given the Area

For Students 9th - 12th
In this online math worksheet, high schoolers find the height of 5 triangles given their area. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching...
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Advanced Trig Exercises

For Students 9th - 10th
Site provides five example problems dealing with real life trigonometry applications. Hints and solution links are provided.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 2 Triangles

For Students 6th - 8th
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of a variety of triangle topics. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page...
Study Guide
Oswego City School District

Regents Exam Prep Center: Mid Segment of a Triangle

For Teachers 9th - 10th
Three resources to help you plan instruction on the mid-segment of a triangle: a lesson with definition, properties, and examples of a mid-segment of a triangle; a seven-question quiz through which students can practice working with...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Solving General Triangles

For Students 9th - 10th
Fourteen problems present a variety of practice solving general triangles. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...
Activity
Analyze Math

Analyze Math: Triangle Problems

For Students 9th - 10th Standards
Here are five triangle problems to solve using the Law of Sines, Law of Cosines, Pythagorean Theorem, and trigonometry. All problems have detailed written solutions included.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Law of Sines

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to use the Law of Sines with different types of triangles.
Activity
University of Georgia

University of Georgia: Navigation Problems

For Students 9th - 10th
These two navigation problems employ the use of the law of sines or cosines and basic trigonometry. Each problems includes links to a sketch of the problem for visual help, and to a solution.