lesson
The Triangle Inequality: Determining Possible Side Lengths
Investigate whether three given side lengths can form a valid triangle using the triangle inequality rule.
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Public learning track
Classifying Triangles and Triangle Properties
6 lessons
Goal
Classify triangles by both side lengths and angle measures, understand that triangle interior angles sum to 180°, and solve for missing angles.
6 lessons
0 of 6 done
- Classifying Triangles: Equilateral, Isosceles, and ScaleneUp next
- Classifying Triangles by Angles: Acute, Right, and ObtuseNot started yet
- Two-Way Triangle Classification by Sides and AnglesNot started yet
- The Triangle Interior Angle Sum: 180 DegreesNot started yet
- Finding Missing Angles in Right and Isosceles TrianglesNot started yet
- The Triangle Inequality: Determining Possible Side LengthsYou are here
