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Q: Is a obtuse triangle regular or irregular?

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A scalene triangle is irregular. Only an equilateral triangle is regular.

An obtuse triangle has an obtuse angle.

An oxymoron. An equilateral triangle cannot be obtuse; an obtuse triangle cannot be equilateral.

an Obtuse triangle

obtuse triangle

Related questions

Irregular

No because an equilateral triangle is a regular polygon whereas an obtuse triangle is irregular

wadud

A scalene triangle is irregular. Only an equilateral triangle is regular.

No.

No.

irregular

It can be either

No - not a plane triangle. The angles of a regular triangle must be equal. So an obtuse triangle, if regular, would have three obtuse angles. The sum of the angles would then be greater than 3*90 = 270 degrees. But the sum of angles of a triangle must be 180 degrees.

A triangle is only a regular triangle in the form of an equilateral triangle

It can be either

A regular polygon has all sides equal length, and all angles equal. An equilateral triangle is regular. All other triangles are irregular.

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