A regular solid is also called a platonic solid. It is a solid whose faces are identical regular polygons. There are 5 such solids. There are only 5 of them because a regular solid has 3, 4 or 5 regular polygons meeting at a vertex. If you look at the maximum number of angles you can see why there are exactly 5 platonic solids. The 5 platonic solid are: Tetrahedron where 3 triangles meet at each vertex, the octahedron where 4 meet at each vertex and the last one made of triangles is the icosahedrons which 5 triangles at each vertex, the cube which has 3 squares meeting at each vertex, and lastly the dodecahedron which is made up of regular pentagons with 3 meet at each vertex. In each case, you can see that 5 is the most number of triangles since 6 would be 6 x 60 degrees >360, 4 squares would be 4 x 90=360, and pentagons have interior angles of 108 degrees so you have (3×108°=324°). Anything more than that is greater than or equal to 360 degrees so not possible. Furthermore, a hexagon has an interior angle of 120 degrees so you cannot have 3 meeting at a vertex.
A very famous mathematician named Euler also has a formula for the number of faces and vertices which if F+V-E=2 and anything more than the 5 regular solids would violate Euler's formula which has been proven to be true.
Solids that are not regular are irregular solids.
Regular object have equla sides and irregular dont
you cut it into regular solids then figure out those then add them together
It is irregular.
Pentagons can be regular or irregular.
It is irregular.
Regular solids have all sides the same, irregular solids have different sides.
Regular object have equla sides and irregular dont
you cut it into regular solids then figure out those then add them together
SI unit of volume is cubic meter (m3). The solids whose volume can be calculated by measuring length, width, height, diameter etc. are called regular solids.
It is irregular.
you can be determine irregular solid by its shapes and if it is not measurable by the ruler .
Pentagons can be regular or irregular.
regular or irregular
It is irregular.
A pentagon can be regular or irregular.
It is an irregular polygon.
Irregular.