I softly call her a "right angel".
A right angle measures 90 degrees.
acute angel
An acute angle measures <90o
An angle that measures to precisely 90o is called a right angle.
An angle that measures between 90 and 180 degrees is called an obtuse angle. Such angles are larger than a right angle but smaller than a straight angle. Examples of obtuse angles include 120 degrees and 150 degrees.
150 degrees
If it measures 90 degrees, then it is called a right angle.
The corner of a square measures 90 degrees which is a right angle.
90 degrees
a right angle measures 90 degrees
90+90+90+90
Acute is < 90 degrees.