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obtuse mean greater than 90
No. A triangle equals 180o. An obtuse angle is anything above 90o. If you were to have two obtuse triangles, then one word for it, if you have one more angle, would be a square or parallelogram.
OBTUSE ; The word obtuse means 'blunt'. ACUTE ; is an angle between '0' and 90 degrees. The word 'acute' means sharp'. The third type of angle is REFLEX , which is an angle between 180 degrees and 360 degrees. The word 'reflex' means ' turned over' or 'turned aginst'. NB For any given point with two lines radiating from the point, the smaller angle can be either acute or obtuse, but the outside angle is always 'REFLEX'.
It means bigger than a right angle.
If you mean how many degrees usually goes into an obtuse angle, most angles above ninety (90) degrees is and not equal to one hundred eighty (180) degrees is considered obtuse.