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It depends on what the formula is for: the area or perimeter or some other characteristic.

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Q: What is the formula for a regular triangle?
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Related questions

Is a triangle regular or not regular?

a triangle is not regular


What is a formula for surface area of triangle?

K, well there is no surface area of a triangle, because a triangle is a 2s figure. Surface area is for a 3d figure. To find the regular area of a triangle the formula is 1/2 of the base X the height :) gl :P


Is a surface area of a triangle figured from the same formula?

well there is no surface area of a triangle, because a triangle is a 2s figure. Surface area is for a 3d figure. To find the regular area of a triangle the formula is 1/2 of the base X the height :) gl :P


Will a regular isosceles triangle tessellate?

There is no such thing as a regular isosceles triangle. The only regular triangle is an equilateral triangle. Having said that, any triangle will produce regular tessellation.


Draw a triangle that is not a regular triangle?

If by regular, you're referring to a regular polygon which has all sides equal length, and all angles equal, then an equilateral triangle is a regular triangle. If you draw a scalene triangle or an isosceles triangle then it will not be equilateral.


Is a scalene triangle a regular or a irregular triangle?

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


What do you call a regular triangle?

A regular triangle is a equalateral triangle. A regular triangle is one for which all sides are congruent and all interior angles ---- are congruent ---- ---- ---- ----


Is a traingle is regular or not regular?

Only when its an equilateral triangle then it is a regular polygon


Are all triangles regular?

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


Is a triangle a regular polygon?

A triangle may or may not be a regular polygon. Let's look into things.First, a triangle is a polygon. All triangles are polygons. To be a regular polygon, the polygon must have equal sides. If the triangle has sides of equal length, then that triangle is an equilateral triangle and a regular polygon. If the triangle doesn't have sides of equal length, then it isn't a regular polygon. But in any case, the triangle is a polygon.


Is a triangle a regular polygon or just a polygon?

A triangle in general is just a polygon. An equilateral triangle is a regular polygon.


Which of these two regular polygons has the largest exterior angle heptagon triangle?

It is the regular triangle whose exterior angles are greater than the regular heptagon