Obtuse Triangle

Types of Triangles

How to Calculate the Obtuse Triangle

Obtuse Angled Triangle - Definition, Formula, Properties & Example

Obtuse Angled Triangle: Definition, Formula, Properties & Example

Types of triangles - Mathematical Way

What is an obtuse triangle? - Quora

Obtuse Triangle -- from Wolfram MathWorld

Area of Obtuse Triangle - Math Steps, Examples & Questions

1) Sharp triangle - (2) Obtuse triangle (a) new point C inserted

Obtuse Triangle Calculator

Classifying Triangles by Angles