74 sides
Geometry is the study of all shapes. This includes heptagons. Trigonometry developed much later than geometry for applying the study of triangles to practical application.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The faces of octahedra can be triangles, quadrilaterals, pentagons, hexagons or heptagons. There are many examples of octahedra - a hexagonal prism, for example - which has no triangular face. At the other extreme, all the faces of a regular octahedron are equilateral triangles.
A triacontakaidigon is a polyhedron with 32 sides. If the sides are all triangles, then there are 32 triangles in a triacontakaidigon, but a triacontakaidigon does not need to have triangular shaped sides.
Three
A shape that has no pairs of parallel lines is called a trapezoid. In a trapezoid, only one pair of opposite sides are parallel, while the other pair is not. This distinguishes a trapezoid from shapes like rectangles, squares, and parallelograms, which have at least one pair of parallel sides. The properties of a trapezoid make it a unique and interesting geometric shape to study.
all triangles have three sides
All triangles have 3 sides.
all triangles have three sides
all triangles have three sides
No. Triangles all have three sides.
All triangles have three sides.