to tell what the angle is
An angle of 90 degrees is a right angle.
its called a right angle!
When lines met or cross at a right angle are perpendicular lines.
An angle which has measure between 90 degrees and 180 degrees is an obtuse angle.
to tell what the angle is
An angle of 90 degrees is a right angle.
Angle C is an acute angle.
its called a right angle!
When lines met or cross at a right angle are perpendicular lines.
by how long it is
no
There is no angle "between" one hand of a clock.
An angle which has measure between 90 degrees and 180 degrees is an obtuse angle.
The bond angle decreases down a group when the central atom has a lone pair. This is because the lone pair exerts greater repulsion on the bonding pairs, causing them to move closer together, resulting in a smaller bond angle.
Accute because the angle is less than 90 degrees
One pair of opposite angle is greater than a right angle.