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a cone doesn't contain any right angles fool !
There are 3 and they each measure 60 degrees
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No right triangle can have any obtuse angles inside it.
Just one.
A two dimensional regular pentagon does not contain any right angles. A pentagonal prism, however, contains up to 10 right angles.
Many shapes have a right angles. For example, a right angled triangle, square or rectangle all contain at least one right angle. Trapeziums may also contain right angles. Any irregular polygon may also contain a right angle.
None because it can only have 1 right angle and 2 acute angles to be a right angle triangle and the 3 angles add up to 180 degrees.
No triangle can ever have more than one 90-degree angle. An acute triangle has none.
4 right angles, no other angles.
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