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Both might be ok, informally, with different meaning. Unsmooth would be a verb, meaning to roughen, as a surface: I unsmoothed it with scratchy, rough sand-paper. Non-smooth would be an adjective: Stand on the non-smooth part for better traction. But it is better to use roughen for the verb and rough for the adjective.
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Does a right triangle have have one right angle?
Yes there cant be more than one right angle in a right triangle
Does Every right triangle has one right angle one acute angle and one obtuse angle?
No it is impossible for a right triangle to have an obtuse angle therefore it will have one right angle and two acute angles.
Does a triangle have 4 right angles?
No, a triangle can have up to one right angle, but it doesn't have to be a right angle in order to be a triangle. A right triangle had one right angle. so, NO
Does a right triangle has 2 right angles?
It has one right angle.
What makes a right triangle?
A right triangle is one that has a right angle.
