A right angle triangle, a square and a rectangle are some of them.
Right angles are formed when perpendicular lines meet each other.
A right triangle
A parallelogram with at least one right angle
A triangle and any irregular polygon with 4 or more sides can have some angles that are lass than right angle.
All triangles that are not right triangles.
a right angle is a right angle
Because a right angle is a right angle.
A right angle is an angle of 90 degrees.
A right angle is a angle with 90o
Assuming your question is what makes a right-angle, it is an angle of 90o .
It is: "angle a is not a right angle" or "angle a is greater than or less than a right angle".
because a right angle is right and a left angle is wrong
The right angle.