A right triangle has exactly one right angle.
A rectangle or a square has exactly four right angles.
Any polygon with more than 4 sides can have one or more right angles,
but it's not necessary.
A right angle triangle
a right triangle
an obtuse angle
An obtuse triangle.
If the angle from the base to the highest point is a right angle, it is right. If not, it is oblique.
a 3 sided shape is a right angle triangle
A right angle triangle
an angle with a acute and right angle
A right angle triangle
a right angle triangle.
a right triangle
an obtuse angle
L
a cube
A right angle triangle
A right angle triangle. (if it is a triangle)
A right angle triangle.