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SOLID FIGURES SPI

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**Solid Figures Solids enclose a part of space (3 dimensional or 3D).**

Solids with flat surfaces that are polygons are called POLYHEDRONS. There are two types of Polyhedrons called PRISMS and PYRAMIDS.

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**Solid Figures The 2-dimesional surfaces are called FACES.**

Two faces intersect in a segment called an EDGE. The 2-dimesional surfaces are called FACES. Three or more edges intersect at a point called a VERTEX.

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PRISMS A solid figure with two parallel faces called BASES. The two bases are connected by polygons called LATERAL FACES. Bases Lateral Faces

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**RECTANGULAR PRISM –CUBE-**

PRISMS RECTANGULAR PRISM –CUBE- TRIANGULAR PRISM PENTAGONAL PRISM

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**PYRAMIDS Vertex Lateral Faces Base**

A solid figure with one base and the lateral faces meet at a common point called the VERTEX. Vertex Lateral Faces Base

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**PYRAMIDS TRIANGULAR PYRAMID RECTANGULAR PYRAMID -TETRAHEDRON-**

PENTAGONAL PYRAMIDS

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CONES AND CYLINDERS CIRCULAR PRISM -CYLINDER- CIRCULAR PYRAMID -CONE-

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PLATONIC SOLIDS PLATONIC SOLIDS are special polyhedrons in which all the sides are the same. Cube – all faces are squares. Tetrahedron – all faces are triangles.

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