A Triangle
Any 2-dimensional shape has a vertex where two sides meet.Any 3-dimensional shape has a vertex where three or more faces meet.
An Equilateral Triangle has 3 equal sides and answers.
Assuming that each vertex is used to connect exactly two sides, all two-dimensional shapes will have the same number of sides as vertices. So a shape with 4 sides will have 4 vertices and a shape with 3 sides will have 3 vertices. Think of a square (4 sides, 4 vertices) and a triangle (3 sides, 3 vertices).
It has 1 set of 3 parallel lines and 3 sets of 2 parallel lines, and 18 angles (3 sides meet at each vertex)
2 dimensionally, a triangle
=None!=
Technically, angles are made of rays that are 2-D, not 3-D. Only 3-D figures have sides. So, no.
No polygon can have less than 3 angles. It would be a triangle with 3 sides but that has 3 angles.
Triangle
A triangle.
A Triangle
A seven sided shape is a heptagon.
A point where three (or more) faces (sides) meet.
Any 2-dimensional shape has a vertex where two sides meet.Any 3-dimensional shape has a vertex where three or more faces meet.
A triangle has three sides and three angles that total 180 degrees.
equilateral triangle