90
A corner of 90 degrees is a right angle
that is an right angle
A right angle.
a small "o"on the top right hand corner after the number
One 90 degree and two 45 degree angles.
it is a big circle on the top right side corner of a number.
The corner of a square measures 90 degrees which is a right angle.
Corners are right (90 degree) angles. Any other degree, (an acute or obtuse angle), is not considered a corner. :)
Because the Bottom left corner makes a 90 degree angle like this |_ and a 90 degree angle is called a Right angle thus the name Right angled Triangle
A right angle is a 90* degrees angle is like a corner of a doora 90 degree angleexample:all rectangles have only right angles
a right angle or a 90 degree angle, the sides are perpendicular to each other
A Triangle with a perfectly 90 Degree angle, which also should have a corner which is perfectly square. :D