Angle Teacher Resources
Find Angle lesson plans and worksheets
Showing 1 - 24 of 557 resources
Measure Angles in Standard Position Using the Coordinate Plane
5 mins 9th - 12th CCSS: Designed
The mechanics of measuring angles is a skill that is often taken for granted in an upper-level math class. This clear and detailed video presentation bridges the gap between identifying angles in geometry, and using their unit-circle...
Special Right Triangles and Right Triangle Trigonometry
9th - 11th CCSS: Adaptable
Right triangles are so special! Use special right triangles to discover the trigonometric ratios. Pairs construct special right triangles and find the values of the ratios of the sides. In the process, they discover the ratios stay the...
Find Trigonometric Values for Angles Using Reference Triangles
7 mins 9th - 12th CCSS: Designed
Put the triangle back in trigonometry, and show learners how the unit circle is built up of right triangles. Taking the skills they know from the first quadrant, the class discovers that these values repeat in all of the quadrants by...
How Do You Solve a Problem Using an Angle of Elevation?
6 mins 6th - 12th
One given angle and one given length equals an unknown height. What? Here's a word problem that can be solved given two pieces of information by using the correct formula. Watch the instructor explain how to use the tangent ratio formula...
Trigonometry Word Problems: Lesson
3 mins 9th - 11th CCSS: Adaptable
Look up or down to find the answer. A segment of an extensive playlist on geometry introduces angle of depression and elevation to find indirect measurements. Using trigonometric ratios, the presentation finds missing sides and angles...
Trigonometry and the Pythagorean Theorem
9th - 11th CCSS: Designed
Ancient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...
Using Trigonometry to Determine Area
9th - 10th CCSS: Designed
What do you do when you don't think you have enough information? You look for another way to do the problem! Pupils combine what they know about finding the area of a triangle and trigonometry to determine triangle area when they don't...