In general, a triangle doesn't need to have any angle greater than
a right angle, but if it does, it can only have one.
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A right angle measures 90°. There are three angles that have greater measurement than a right angle. They are:Obtuse angles - They are angles that measure between 90° and 180°, but not exactly 90° and 180°. In other words, they measure less than 180° but greater than 90°.Straight angle - It is an angle that measure exactly 180°.Reflex angles - They are angles that measure greater than 180°.
The measure of a straight angle is 180 degrees, and the measure of an acute angle is less than 90 degrees. Therefore, the sum of a straight angle and an acute angle will always be greater than the measure of two obtuse angles, as the sum of two obtuse angles will always be greater than 180 degrees. In mathematical terms, 180 + x > 180 + 2y, where x is the acute angle and y is the measure of an obtuse angle.
Acute Angle: An angle whose measure is less than 90 degrees and greater then zero degrees is called an acute angle.Right Angle: An angle whose measure is 90 degrees is called right angle.Obtuse Angle: An angle whose measure is greater than 90 degrees and less than 180 degrees is called obtuse angle.Straight Angle: An angle whose measure is 180 degrees called a straight angle.Reflex Angle: An angle whose measure is greater than 180 degrees and less than 360 degrees is called a reflex angle.Complete Angle: An angle whose measure is 360 degrees is called a complete angle.Zero Angle: If the measure of an angle is zero it is called a zero angle.
an angle whose measure is greater then 90 and less the n180
An acute angle is greater than 0 but less than 90 degrees