A circle.
flat & non-flat
A 6 sided planar (2-d) polygon is called a hexagon.A 6 sided 3-d shape is a hexahedron, which might also be a cube, rectangular prism, die, pentagonal pyramid, or quadrilateral di-pyramid depending on the exact shape.
trigonal planar
Trigonal Planar bent!
XeF4 is square planar
triangle - it is planar
-1
A really big triangle made by aliens.I never have seen the word "pryrimid" before but "pyramid" is a geometric shape.the shape is formed by a polygon (many sided planar figure) and a point (vertex) not coplanar with the polygon. Join the vertex with the sides of the polygon with triangular faces and yoyu have a pyramid. The pyramid with the fewest sides is a tetrahedron (a triangular pyramid). The regular tetrahedron is the simplest of the solids.The square pyramid has been used since antiquity for buildings.Some very big stone pyramids are in Egypt, Mexico and China.
2
WRONG: A 3-d object needs 6 faces for it to look like a 3-d figure Actually the answer is "at least four" - not six. Consider a regular tetrahedron, which is a pyramid with a triangular base. It has four planar faces.
A "pyramid" in geometry is a solid whose base is a polygon (many sided planar figure) and a vertex (a single point where all the triangular faces meet).The base of a regular pyramid is a polygon whose sides all have the same length.As such a pyramid can have any number of faces.An equilateral pyramid (with all sides - including the sides meeting at the vertex - has sides of the same length) is necessarily regular and can have 4, 5, or 6 sides if the base is a triangle, square or pentagon.The equilateral triangular pyramid is also called a regular tetrahedron.
There are two possible structures for a square planar molecule with a formula of AX3Y. In one structure, the Y atom is in the center and the three X atoms are arranged around it. In the other structure, one of the X atoms is in the center and the Y atom and the other two X atoms are arranged around it.
This molecule is trigonal pyramid because it has 3 bonds with Br and one lone pair of electrons and if you look at a tetrahedral trigonal pyramid Lewis Structure you will see it matches
CO32- is trigonal planar, bond angles are 1200
The population of Planar Systems is 456.
The population of Planar Systems is 2,010.
Planar Systems was created in 1983.