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91 degrees is an obtuse angle. 89 degrees is an acute angle.
The complement of 89 degrees is: 89+1 = 90 degrees which is a complementary angle
Oh, what a happy little question! If you have an angle that measures 89 degrees, you have a very special angle called an acute angle. It's like a little bird perched on a branch, just waiting to bring balance and harmony to your mathematical landscape. Just remember, every angle is unique and adds its own touch of beauty to the world around us.
Here's some angles for reference: 0 degrees-89 degrees are acute. 90 degrees is a right angle. 91 degrees-179 degrees are obtuse. 180 degrees is a straight angle.
It's larger than 90 degrees, so we call it an "obtuse angle."