An obtuse angle is between 90o and 180o.
90o is a right angle.
Between 90o and 180o is an obtuse angle.
180o is a straight angle.
A right angle is like this (look at ray A):
A
^
|
|
|
L-----------> exactly 90o
A straight angle is this (look again at ray A):
A<------------------> 180o is flat
For an obtuse angle, the A should be somewhere between the places where A was in the right and the straight angles.
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no right angle with only one angle is obtuse
Obtuse
Type in this link...http://rchsbowman.files.wordpress.com/2008/09/obtuse-1.jpgIt should look like that
They make a pair of acute angles and a pair of obtuse angles. In rotational order, the angles are acute, obtuse, acute, obtuse.
an obtuse angle is greater than 90 degrees and less than 180 degrees