We found 39 resources with the concept obtuse triangles
Applications of the Pythagorean Theorem: LessonLesson Planet
4 mins 8th - 11th CCSS: Adaptable
The Pythagorean Theorem works for something other than right triangles; show your class all it can do. Using information from the Pythagorean Theorem, the video shows how to determine whether a triangle is an acute or obtuse triangle....
Altitudes: ExamplesLesson Planet
4 mins 6th - 11th CCSS: Adaptable
Find 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...
Classifying Triangles: LessonLesson Planet
5 mins 4th - 8th CCSS: Adaptable
That'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.
Discovering Triangle SumLesson Planet
8th - 10th CCSS: Designed
Math is everywhere, even in bikes! Groups investigate the sum of the angles of a triangles with two method—measurements and transformations. Using diagrams of bicycles, classmates find the types of triangles formed by the seat and axles....
Ambiguous Case: Furniture Store ProblemsLesson Planet
10th - 12th
Remove any ambiguity about using a helpful resource. Individuals use an interactive to find the number of triangles that fit given conditions. They find that some conditions can result in more than one triangle in the ambiguous case.
The Area of All Triangles Using Height and BaseEngageNY
6th CCSS: Designed
Drop in the altitude is all that is needed. Pupils explore finding areas of different types of triangles. Learners realize the formula for finding their area is the same and explore the location of altitudes in triangles to finish the...
Pythagorean Theorem to Classify Triangles: Missing AnglesLesson Planet
8th - 12th CCSS: Designed
Learn to use the Pythagorean Theorem with non-right triangles. Pupils use the interactive to discover the relationship between the lengths of sides for acute and obtuse triangles. They compare the squares of the sides of the triangles to...
An Area Formula for TrianglesEngageNY
11th - 12th CCSS: Designed
Use a triangle area formula that works when the height is unknown. The eighth installment in a 16-part series on trigonometry revisits the trigonometric triangle area formula that previously was shown to work with the acute triangles....
Unit 5 Math Vocabulary Cards (Grade 6)Lesson Planet
6th CCSS: Adaptable
Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a definition card...
Assessment For The California Mathematics Standards Grade 6Lesson Planet
6th CCSS: Adaptable
Test your scholars' knowledge of a multitude of concepts with an assessment aligned to the California math standards. Using the exam, class members show what they know about the four operations, positive and negative numbers, statistics...
Study Jams! Classify TrianglesLesson Planet
2 mins 5th - 8th CCSS: Adaptable
Jam on with this multi-faceted activity teaching triangle classification. Start with a learner-paced lesson describing the different qualities of triangles and follow with a fun karaoke session. Also provided are two types of...
What are Acute, Obtuse, and Right Triangles?Lesson Planet
4 mins 5th - 8th
Triangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: right, isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn...