<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation

Comparing Angles and Sides in Triangles

Inequality theorems and ordering angles and sides of triangles.

Atoms Practice
Estimated8 minsto complete
Practice Comparing Angles and Sides in Triangles
Estimated8 minsto complete
Practice Now
Triangle Sum Theorem
teacher Contributed

RWA Triangle Sum Theorem


Spherical Geometry


  • triangle sum theorem
  • comparing angles and sides in triangles
  • sphere
  • Spherical Geometry

Student Exploration

Do the angles in a triangle always add up to 180 degrees? How are the lengths of the sides of a triangle are controlled by the sizes of the angles in Spherical Geometry?

Watch the video below to learn more


Extension Investigation

  1. Students can make a presentation like the one below http://www.youtube.com/watch?v=b7DmUymGR28&feature=related
  2. Virgo is one of the constellations of Zodaic. Three principal stars of the constellation form a triangle. If mS=25 and mP=135, then find the mV. http://worksheets.tutorvista.com/angles-in-a-triangle-worksheet.html

Layering (optional)

How do we show that all of the angles the triangle add up to 180?

Watch these videos to see how

Image Attributions

Explore More

Sign in to explore more, including practice questions and solutions for Triangle Sum Theorem.
Please wait...
Please wait...

Original text