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A right triangle will always have exactly one right angle and two acute angles. It will never have an obtuse angle.
The easiest proof of that is the fact that sum of the angles in a triangle is always 180o, and if it's a right triangle, then one of it's angles is 90o, leaving only 90o for the angles of both of the other two. Since they both have to be greater than zero for it to qualify as a triangle, they will always both be less than ninety, and thus always acute.
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Is 72 actue right or obtuse?
An angle of 72 degrees is acute.
What triangle has an obtuse angle?
An obtuse triangle has an obtuse angle.
A triangle with 1 obtuse angle?
A triangle with 1 obtuse angle is called an obtuse triangle.
Does every triangle have at least one obtuse angle?
-- No right triangle, acute triangle, or equilateral triangle has an obtuse angle in it. -- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it .
What do you call a triangle containing one obtuse angle?
A triangle containing an obtuse angle is an obtuse triangle.
What is a triangle with one obtuse angle?
obtuse triangle
Why does every triangle have to have an obtuse angle?
Not every triangle has to have an obtuse angle.
What is a triangle with an obtuse angle?
obtuse triangle
What is a triangle with 1 obtuse angle and no equal sides?
Obtuse Triangle- An obtuse triangle has one angle that is bigger than 90 degrees (Obtuse angle). The following is an obtuse triangle. ! Hope it helped:')
If a triangle has no obtuse angle then it is a right triangle?
It could be a right triangle if it has a right angle (90 degrees). If it does not have a right angle, then it is an acute triangle.
What kind of the triangle according to sides of the angle?
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.
What angles does a obtuse triangle need so it could be a obtuse triangle?
It needs at least 1 obtuse angle. Usually you can only have one obtuse angle, so the rest would be acute.
