right angle
With a small square in its corner
Depends on the corner. I live opposite a school where all classrooms are hexagonal, so the angle at the corner of the wall (between two walls) is 120 degrees.
All right angle triangles have a square corner
A right angle
A square corner is a 90° angle which is called a "Right angle".
A corner of 90 degrees is a right angle
The Greek root meaning angle or corner is "gonia."
right angle
The angle at which the car is approaching the corner
right angle
a vertex
acute andle right angle obtuse angle reflex angle
With a small square in its corner
90 degrees, or a right angle.
It is a right angle trapezoid
corner