We found 433 resources with the concept right triangles
Inverse Trigonometric Ratios: Lesson
5 mins 9th - 11th CCSS: Adaptable
New ReviewFinding the inverse of trigonometric ratios is not the same as finding the reciprocal. The presentation introduces how to find the angle of a right triangle given sides. Part of a larger playlist on geometry, the video uses the inverse...
Special Right Triangle 30-60-90: Lesson
3 mins 8th - 11th
New ReviewIt is special—given one length, you can find the other two. A segment of a basic geometry playlist provides the ratio of the lengths of sides of a 30-60 right triangle. The presentation shows how to use the ratio to find side lengths...
4 mins 6th - 11th CCSS: Adaptable
New ReviewFind the location of altitudes—from any elevation! The video presents the definition of an altitude of a triangle. By drawing examples, the segment of a larger geometry playlist highlights the location of altitudes of various triangle...
The Trigonometric Ratios: Lesson
6 mins 9th - 12th CCSS: Adaptable
New ReviewSOH, what is this thing called trigonometric ratios? A section of an extensive playlist on geometry identifies the adjacent and opposite sides in relationship of an angle. Using the identified sides, the video defines the sine, cosine,...
Inscribed Similar Triangles: Lesson
4 mins 6th - 12th CCSS: Adaptable
New ReviewCreate similar triangles with a little altitude. A section of an extensive playlist on basic geometry discusses how an altitude of a right triangle creates similar triangles. Using the theorem, the presentation finds unknown side...
Using the Pythagorean Theorem: Lesson
5 mins 8th - 11th CCSS: Adaptable
New ReviewIs it right to use the converse? A segment of a basic geometry playlist introduces the Pythagorean Theorem and its converse. The video uses Pythagorean triples when finding whether a triangle is a right triangle or not.
Classifying Triangles: Lesson
5 mins 4th - 8th CCSS: Adaptable
New ReviewThat's correct, it is right and scalene. The video introduces the two methods for classifying triangles, sides, and angles. A resource in the playlist for basic geometry provides the definitions for each of the classifications.
How Tall Is the School's Flagpole?
9th - 12th CCSS: Designed
New ReviewLet the class use a clino—what? Groups build a clinometer to measure angles of elevation. Using their new tools, teams record the measurements made and calculate the height of two objects around the school. Teammates then make a...
Introduction to the Pythagorean Theorem
4 mins 7th - 10th CCSS: Adaptable
Use a new medium to investigate an old mathematical theorem. Young mathematicians learn about the Pythagorean Theorem from a YouTube video in the Socratica Geometry playlist. They first see if a set of values is a Pythagorean triple and...