a pentagonal pyramid
With a pair of scissors by cutting off two off its corners leaving you with 2 triangles and 1 pentagon.
1 triangle is formed.
4 faces are triangles and 1 face is a square the square face is the base of the pyramid
all 2D figures have 1 face.
Depending on the individual shapes, you can make a large triangle, a square or any other quadrilateral, a regular or irregular pentagon or hexagon. If concave shapes are allowed, you can make any polygon upto a decagon.
a hexagon * * * * * Depending on the shape and sizes of the triangles and where they are attached, you can also get a kite, a rectangle, a parallelogram, a decagon, octagon, pentagon.
A shape with one pentagon and five triangles can be visualized as a pentagonal pyramid. In this configuration, the pentagon serves as the base, and the five triangles converge at a single apex above the pentagon, forming the triangular faces of the pyramid. This structure combines the two types of polygons in a three-dimensional form.
A pentagon based pyramid.
By cutting off two of its corners which will leave you with 2 triangles and 1 pentagon.
With a pair of scissors by cutting off two off its corners leaving you with 2 triangles and 1 pentagon.
To create a pentagon using 6 tangram pieces, start by selecting the shapes: 2 large triangles, 1 medium triangle, and 3 small triangles. Arrange the two large triangles to form a base, positioning the medium triangle on top to create the upper part. Use the small triangles to fill in the gaps and complete the pentagon shape. Adjust their positions until the outline resembles a pentagon.
Three triangles
Pentagon
South Africa * * * * * No, the green in South African flag is not a pentagon. The country is Sudan.
1 square4 triangles4 rectangles
1 triangle is formed.
One possible way to divide a pentagon into five parts is (assuming this is a convex pentagon) to start by placing a dot directly in the center. Then, draw a 5 lines from that center dot connecting to the 5 points around the edge of the pentagon. You should now have 5 triangles instead of 1 pentagon.