a square. duuh. * * * * * duuh is correct! A square has 4 identical sides or 4 identical angles but not 4 identical faces! A shape with four identical plane faces is a regular tetrahedron or a triangle based pyramid.
You've got to build a 3 dimensional triangle. Lay the first three matches flat on the table touching one another in the shape of a triangle, then put the remaining three matches at each of the corners of the original three matches so that the second set of three meet together at the apex above the original three matches. Visually, it would take the shape of a pyramid. That will give you four equal triangles.
It is a solid shape with two identical and parallel rectangles as bases and four rectangular faces connecting them together. A smoothed brick is an example of a rectangular prism.
A quadrilateral triangle is an impossible shape. A quadrilateral has four straight sides while a triangle has three.
By its very nature of being a triangle, and a 2D shape, a triangle cannot have four plane faces. However, a tetrahedron is a polyhedron made up of four triangular faces.
a square. duuh. * * * * * duuh is correct! A square has 4 identical sides or 4 identical angles but not 4 identical faces! A shape with four identical plane faces is a regular tetrahedron or a triangle based pyramid.
Pyramid
Triangle
Four equilateral triangles make up another equilateral triangle.
You've got to build a 3 dimensional triangle. Lay the first three matches flat on the table touching one another in the shape of a triangle, then put the remaining three matches at each of the corners of the original three matches so that the second set of three meet together at the apex above the original three matches. Visually, it would take the shape of a pyramid. That will give you four equal triangles.
triangle
A tetrahedron = triangle based pyramid.
A tetramino is a shape which is formed by four identical squares.
Angles and sides are congruent when they are identical. A shape with four identical sides and angles is a square.
It is a solid shape with two identical and parallel rectangles as bases and four rectangular faces connecting them together. A smoothed brick is an example of a rectangular prism.
A quadrilateral triangle is an impossible shape. A quadrilateral has four straight sides while a triangle has three.
By its very nature of being a triangle, and a 2D shape, a triangle cannot have four plane faces. However, a tetrahedron is a polyhedron made up of four triangular faces.