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An obtuse triangle has 1 obtuse angle and 2 different acute angles and they all add up to 180 degrees

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Q: What has at least one obtuse angle?

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obtuse triange

-- 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 .

Trapezoids ALWAYS have at least one obtuse angle (if they have two right angles, then there will only be one obtuse angle), usually two (in any other circumstance, they will have two obtuse and two acute angles).

-- 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 . -- Right triangles, acute triangles, and equilateral triangles don't have any obtuse angles in them.

Yes, because the angles have to add up to 360º, at least one angle has to be obtuse.

It needs at least 1 obtuse angle. Usually you can only have one obtuse angle, so the rest would be acute.

An obtuse triangle has 1 obtuse angle and 2 different acute angles and they all add up to 180 degrees

if you are talking about regular polygons, then nothing has an obtuse angle. otherwise, pretty much any shape can have an obtuse angle

No. A triangle can have only one obtuse angle. A triangle must have at least two acute angles

It can have at most one obtuse angle.

One of them.

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