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Q: What is a polygon called if each interior angle equals 120?

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120

an equilateral triangle, or equiangular triangle

A regular polygon having an interior angle measure of 168o has 30 sides and is called a triacontagon.

Very rarely.

2280 :S

If the measure of an interior angle of a regular polygon is 140o, the polygon is a nonagon (sometimes called an ennagon) having 9 sides.

40 sides

No regular polygon can have an interior angle of 180 degrees or more. No regular polygon can have an interior angle of 180 degrees or more. No regular polygon can have an interior angle of 180 degrees or more. No regular polygon can have an interior angle of 180 degrees or more.

Obtuse

The sum of the interior angles of any regular polygon of n sides is equal to 180(n - 2) degrees.

A regular polygon having an interior angle of 120 degrees will have 6 sides and is called an hexagon.

The interior angle of a polygon and its adjacent exterior angle can never be complementary.

A polygon is a closed plane figure bounded by straight sides. Since it is a closed surface, it has an interior (inside) and an exterior (outside). The interior angle of a polygon is the angle formed by two adjacent sides such that the angle is facing the interior of the polygon.

It will have 8 sides and it is called a regular octagon.

160

A polygon with an interior angle exceeding 180 degrees is called CONCAVE or RENTRANT.

if the interior angle is 150 the exterior angle equals 30. since exterior angle equals 360/ by number of sides the number of sides equals 360/30 which equal 12

The angle inside a polygon. Simple!

interior angle

interior angle of an n-sided polygon = (180(n-2)/n)°interior angle of a 24-sided polygon = (180x22/24)° = 165°

A [regular] pentagon.

In a polygon there are no such angles.

Any polygon can have an interior angle of 144 degrees. The measurement of an interior angle of a decagon is 144 degrees.

Each interior angle in 12-sided polygon is 150 degrees.