180
180
a triangle has 180 degree but each exterior has 90 degree .
There is one 90 degree angle in a right angle triangle
An obtuse triangle is a triangle that has one angle greater than 90 degrees.
The 110 degree angle makes this triangle an obtuse triangle.
The 3 interior angles of a triangle add up to 180 degrees.
3
One
1
180 all together
A right triangle has a 90 degree angle in it. This is not to be confused with a wrong triangle, which has two 90 degree angles.
less than 90 degrees