Yes, all triangles are polygons.
A polygon is any plane figure bounded only by straight lines. Thus a triangle is a polygon with three sides. Similarly, a quadrilateral is a polygon with four sides, a pentagon is a polygon with five sides, and so on.
they are all polygons
Yes.
They are all polygons
They are all polygons.
there all polygons and have angles
All three are polygons.
All of them.
A triangle, a square, a rectangle, a pentagon are all polygons.
The all have 2 or more sides
360 degrees as is with all other polygons!
Any polygon other than a triangle can be divided into simpler polygons. They can all be divided into triangles.
A triangle, a square, a rectangle, a pentagon are all polygons.