what are the different geometric shapes?

Answer 1

There are plane shapes (figures) which are two dimensional and all the points and lines enclosing the figure are two dimensional'There are also solid shapes which are three dimensional.

PLANE FIGURES
Triangle -- plane figure enclosed by three straight lines
a) equilateral triangle has all three sides equal to each other
b) isosceles triangle has ttwo sides equal to each other
c) scalene triannle has no sides equal to each other
d) acute triangle has all angles < 90 degrees
e) right triangle has one right angle and 2 acute angles
f) obtuse triangle has one angle >90 degrees and 2 angles < 90
Quadrilateral -- plane figure enclosed by four straight lines
a) iirregular quadrilateral has no sides equal to each other
b) parallellogram has oposite sides parallel to each other
c) rhombus parallelogram with all sides equal
d) square is rhombus with four right angles
e) rectangle is parallelogram with four right angles
f) trapezoid has two sides parallel and two sides not parallel
g) kite has two pairs of equal sides but pairs are unequal and all angles less tha 90 degrees. (looks like a kite you fly)
pentagon -- 5-sided figure
hexagon -- 6-sided figure
heptagon -- 7-sided figure
octagon -- 8-sided figure
nonagon -- 9-sided figure
decagon -- 10- sided figure
n- gon -- n-sided figure
There are names for polygons of 11- 25 sides and more but the are long and difficult to pronounce and rarely used. A regular poly gon is a figur of 3 sides or more havibg all of its sides equal to each other.
Circle -- a figure having all points on its border equidistant from a given point called the center.
Ellipse -- a figure having all the points on its border such that the sum of their distances from two given points called the foci is a constant value.

SOLID SHAPES
Prism -- a solid having its two parallel bases consisting of congruent poly gons and its sides consisting of parallelograms.

Right prism has its upper base directly over its lower base so that the sides consist rectangles of

pyramid - solid whos base is a polygon and whose sides are triangles meeting at a single point called the vertex.

cone - solid whose base is a circle and whos lateral surface is made up of lines drawn to a single point called the vertex.

sphere - a solid that is the locus of all points equidistant from a given point called the center.

ellipsoid - a solid generated by rotating an ellipse about one of its axses.

There are many more shapes, but this collection should give you a good idea.

Answer 2

Circles, triangles, and squares are shapes. Geometry is the mathematical study of shapes, figures, and positions in space. It is useful in many careers such as architecture and carpentry.

Geometry is the study of measurement and comparison of lines, angles, points, planes, and surfaces and of plane figures and solids composed of combinations of these. A shape is the outer form of an object or figure such as a circle, triangle, square, rectangle, parallelogram, trapezoid, rhombus, octagon, pentagon, and hexagon. There are equilateral, isosceles, and right triangles. A solid is a three-dimensional figure such as a cube, cylinder, cone, prism, or pyramid. Other solid shapes include the tetrahedron, octahedron, and dodescadhedron. Positions in space are things like points, lines, and angles.

Answer 3

Triangles - iscosceles, scalene, equilateral, right, obtuse, acute.
Quadrilaterals- square, rhombus, parallelogram, rectangle, trapedoid,
Polygons- all others

Answer 4

they are all kinds of polygon
http://en.wikipedia.org/wiki/Polygon
circle is the polygon which has countless points