Page 15 - PPT 6

Obtuse-Angled Triangle:

 An obtuse triangle (or obtuse-angled triangle)

is a triangle with one obtuse angle (greater

than 90°) and two acute angles.

 Note: In an obtuse triangle, one of the angles is

obtuse and each one of the remaining two

angles is an acute angle.( Because the sum of

the all the angles of a triangle is 180º.)