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Q: What is a Polygon with no acute or right angles?

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A right angle triangle

yes

A right triangle.

Although a triangle must have at least two acute interior angles, a square has four interior right angles and no acute angles. And as regular polygons have increasing numbers of sides, their interior angles get larger.

The only polygon with just acute angles is an acute angled triangle.

An acute triangle.

An acute polygon is one whose interior angles are all acute. Only a triangle can be an acute polygon.

Any polygon can contain acute interior angles.

A right angle triangle or an obtuse triangle

A triangle having all angles less than 90 degrees is a polygon having no parallel sides and all acute angles.

If its acute angles are different then it is not a regular polygon but if it has 3 equal acute angles of 60 degrees then it is a regular equilateral triangle

A polygon can have any kind of angles: acute, right, obtuse and reflex. An angle can have any value in the range (0, 360) degrees excluding 180 degrees.

Parallelogram.

a right triangle

A triangle.

A four-sided polygon with all sides equal and no right angles would be a rhombus. A rhombus consists of two acute angles and to obtuse angles.

A square

A polygon, that is, a plane area bounded by any number (>2) of straight lines can have acute angles.

Yes, acute angles and right angles are different. An acute angle is less than 90 degrees - a right angle is exactly 90 degrees.

A right angled triangle can only have two acute angles.

An irregular pentagon is a polygon that has five sides and two right angles. A regular polygon on the other hand does not have right angles.

It could be any irregular polygon with 4 or more sides (and 4 or more angles).

In a right angled triangle the two other angles are acute.

In a right triangle there is only one acute angles.

In a right angled triangle the two other angles are acute.