Right angle (90) < Obtuse angle < Straight angle (180)
Straight angle
an acute angle.
A straight angle is 180 degrees so half of that is 90 degrees of a right angle.
A right angle joint is called a vertex as is with any other angle (yes even straight angles)
A right angle is 90 degrees - a 180 degree angle is called a straight angle.
It has to be 90 degrees and yes, straight.
A straight corner
a right angle is half of a straight angle
Acute angle=45 degrees Right angle = 90 degrees Straight Angle=180 degrees.
A 90-degree angle is a right angle.
An acute angle is an angle less than 90 degrees. A right angle is 90 degrees. A straight angle is a straight line. For example: take a 90 degree angle and straighten it out to form a line, and it becomes a straight angle.
A straight angle is an angle that is 180 degrees exactly (a straight line). A right angle is 90 degrees (like the corners of a square.)