That would be a Complementary Angle.
An angle is formed where two lines meet. Parallel lines do not meet. Therefore they do not form an angle. So there is no angle to have a name. So no name.
They are called perpendicular.
An angle greater than 90 degree is an obtuse angle.
complete angle
A right angle
An angle is formed where two lines meet. Parallel lines do not meet. Therefore they do not form an angle. So there is no angle to have a name. So no name.
That's the "vertex" of the angle.
They are called perpendicular.
Oh honey, that's an easy one. Another name for a right angle DEF is a 90-degree angle. It's like the perfect L shape, straight up and down, no funny business. So, go ahead and call it a 90-degree angle or a right angle, whatever floats your boat.
An angle greater than 90 degree is an obtuse angle.
complete angle
A right angle
An acute angle
A right angle
A right angle
The name of an angle that measures exactly 90 degrees is called a right angle. In geometry, a right angle is formed when two lines or line segments meet at a 90-degree angle, creating a perfect L-shape. Right angles are commonly seen in shapes such as squares, rectangles, and other geometric figures. The symbol for a right angle is a small square placed in the corner where the angle is formed.
if the two line intersect at 90 degree then these are called perpendicular lines