Q: Can a regular heptagon and equilateral triangle tile a plane?

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Equilateral triangle, square and regular hexagon.

No. Equilateral heptagons (7 sided figures) do not tessellate the plane. Not if no other polygons are allowed. But if you allow a (non-equilateral) pentagon then you might be able to tessellate the plane!

If it's interior angle is a factor of 360 then it will tessellate such as a square, a regular hexagon and an equilateral triangle.

No.

180 degrees in any plane triangle.

Related questions

No.

heptagon and an equilateral triangle

Equilateral triangle, square and regular hexagon.

No. Equilateral heptagons (7 sided figures) do not tessellate the plane. Not if no other polygons are allowed. But if you allow a (non-equilateral) pentagon then you might be able to tessellate the plane!

Equilateral triangle, square and regular hexagon.

It is simply a closed seven-sided plane figure, bounded by seven straight lines, each of the same length. There is no requirement for the angles to be the same - in fact the shape can be concave.

yes it does

a plane triangle is a normal triangle, like the isosceles, right angled, equilateral and scalene triangle.

No.

If it's interior angle is a factor of 360 then it will tessellate such as a square, a regular hexagon and an equilateral triangle.

No, never in plane geometry.

No.