Math and Arithmetic
Algebra
Geometry

# Who invented the right angle?

567 ###### 2012-06-07 22:07:39

but head invented the right angle

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## Related Questions    It is: "angle a is not a right angle" or "angle a is greater than or less than a right angle". Assuming your question is what makes a right-angle, it is an angle of 90o . a left angle is the opposite from a right angle :) because a right angle is right and a left angle is wrong 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!(; No. A right angle is a right angle and cannot be anything else. If the other angle is smaller than the right angle, it is an acute angle.If the other angle is the same as the right angle, it is a right angle.If the other angle is bigger than the right angle but smaller than two right angles, it is an obtuse angle.If the other angle is the same as two right angles, it is a straight angle.If the other angle is bigger than two right angle but smaller than four right angles, it is a reflex angle.After four right angles, the other angle starts back at being an acute angle. A "right angle" is a 90 degree angle, regardless of the shape. A triangle can contain a right angle, therefore a right angle (90*) is the "most" right angle a triangle can have.  Can a right angle be on the left? Yes a right angle can be on the left First: A right angle is an angle of 90 degrees Second: An obtuse angle is an angle of 91 degrees to 179 degrees A right angle can not have an obtuse angle It is also a right angle Supplement = 180 - angle = 180-90 = 90 = right angle A right-angle is a 90 degree angleA right triangle has one, and a 90-degree angle isone.  An angle measures 90 degrees when it is a right angle Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle! a right triangle has one right angleA triangle with a right angle is a right triangle. A right angle is an internal angle equal to 90o You can tell if an angle is a right angle because it has a little symbol which is a square where the two lines meet to form the angle. A right angle is a quarter of a circle. Lines that are at a right angle are perpendicular to each other.    From its right angle. right angle --&gt; rect angle.

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