There's no such name that covers all shapes with a 90 degree angle.
Squares have them, and so do rectangles.
A trapezoid could have one, but not more than one.
And any polygon with more than four sides can have one or more 90-degree angles,
but not all of its angles can be 90 degrees.
A Right Angle
A right angle triangle has one 90 degree angle and two acute angles
A circle has 360 degrees and a square has four 90 degree angles as does a rectangle.It's called complementary. A 90 degree angle is called supplementary.
A 90-degree angle is commonly called a right angle.
A 90 degree angle
A 90-degree angle is a right angle.
what is a 90 degree angle called
The lines that cross at a 90 degree angle are called Perpindicular lines.
a right angle.
A Right Angle
A right angle triangle has one 90 degree angle and two acute angles
a 90 degree angle
Heart
A right angle triangle must have a 90 degree angle and two acute angles.
A 5 degree angle is an acute angle because it is greater than 0 but less than 90 degrees.
A circle has 360 degrees and a square has four 90 degree angles as does a rectangle.It's called complementary. A 90 degree angle is called supplementary.
A 90 degree angle is also known as right angle. A right angle (or 90 degrees) looks like an L shape. A square or rectangle's four corners are all 90 degrees.