A protractor, or a 45 degree triangle
Protractor
A protractor is used to draw a right angle of 90 degrees.
the unit used to measure angle is degree. It is also measured in radians.
The unit measured in is degrees, the tool used is a protractor. In some branches of mathematics, angles are also measured in "radians".
There are 90 degrees in a left angle as there are in a right angle but the term 'left angle' is rarely used
An angle of 90 degrees is a right angle.
A protractor
protractor
It is called a protractor.
A protractor can be used to measure an angle. An angle is basically part of a circle. A complete circle is 360 degrees. A right-angle is 90 degrees, half a circle is 180 degrees, and so on.
A degree is the measure of an angle.
Angles are units of measure that define the relationships between two intersecting lines It's tough to demonstrate by text, but I'm goind to give it a try; _\ = an angle of about 60 degrees _/ = an angle of about 120 degrees _| = an angle of 90 degrees (also called a 'right' angle) _._ = an angle of about 180 degrees = is an angle of about 0 degrees