Properties+and+Shapes

**Properties and Shapes!** Shape refers to the configuration of surfaces and edges of a two- or three-dimensional object. We perceive shape by contour or silhouette.  Will classify shapes into two groups: the figures that have 2 dimensions: width and length and the figures of three dimensions: width, length and depth.

**2D SHAPES ** __Rectangle: __ A rectangle is a parallelogram whose four sides at right angles to each other.

__Square: __ A square is a parallelogram with four equal sides and four angles are also equal and straight.

__Triangle: __ A triangle is a polygon defined by three intersecting lines. The points of intersection of the lines are the vertex and line segments are the sides of the triangle.

__Circle: __ A circle is the geometric curve flat, closed, whose points are equidistant from the center.

__Arch: __

Is a design element in a curved or polygonal, that covers the open space between two walls. Placing all the burden on the bow at the supports

** 3D SHAPES ** __Cube: __ <span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">A cube is a solid object in the form of box having six identical square faces.

__<span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Pyramid: __ <span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">A pyramid is a polyhedron whose base is any polygon and whose lateral faces are triangles with a common vertex called "the vertex of the pyramid."

__<span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Sphere: __

<span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">A sphere is a solid figure bounded by a closed curved surface whose points are equidistant from the center of the sphere.

__<span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Cylinder: __ <span style="color: #248d24; font-family: 'Comic Sans MS',cursive; font-size: 120%;">A cylinder surface is formed by the points at a fixed distance from a given straight line, the cylinder axis.