You use the right angle next to an acute angle perhaps and you see that when a angle is closer together it is an acute angle and if it is spread apart or farther apart from a right angle it is an obtuse angle. If the angle is a straight line and doesn't look bent like a right angle it is a straight angle.
90 degree angle pipe
A square or a rectangle
a right triangle it's called this because it has a right angle.
It could be a kite, an arrowhead or an irregular quadrilateral with a right angle - which has no specific name.
Congruent angles have the same measure. congruent Kenpachi54 improve answer: Actually, angles don't have to be congruent just to have the same angle measurements A has a right angle is 90 degrees. even if there is a small right angle and a large right angle you know they are both 90 degrees because ALL right angles are 90 degrees, so there is really no name for it.
If the angle is larger than a right angle it is obtuse
So basically , you have an right angle and another angle . You draw an right angle over the angle your looking at and if its smaller than the right angle then its an acute angle . If its bigger than the right angle then its a obtuse angle . GoodLuck!(;
A right angle is 90 degrees if an angle is wider than 90 it is obtuse if it is less than 90 it is an acute angle.
90o angle
A right angle
Right angle E. The vertex of any angle can also be used to name the angle.
The Right Angle.
Angle DEF is the same as angle FED.
90 degrees
Right angle E
Elbow
It is called an obtuce angle because it looks like this right?: -------------------------_------------------------ or a right angle if it looks like this: ! ! ! ! ! ! ! ---------------------------------