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Published byJoella Anthony
Modified over 6 years ago
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A polyhedron is a 3-dimensional, closed object whose surface is made up of polygons. Common examples: cubes and pyramids
Faces – the polygons on the outside of the polyhedron. Edges – the lines that touch polygons to each other. Vertices – the “corners” that connect edges to other edges
32 faces (20 hexagons, 12 pentagons) 60 vertices (each connected to 2 hexagons and one pentagon) 90 edges
Count the number of faces, edges, and vertices on each of the following polyhedra: Cube Triangular pyramid Square pyramid
Try and come up with a formula that relates the numbers of edges, faces, and vertices of a certain polyhedron, and see if it works for EVERY polyhedron. Something maybe like: E + F = ????
Congruent Two shapes that are the same size and shape
A Naturally Occurring Function
Preparation for MG2.1 Use formulas routinely for finding the perimeter and area of basic two-dimensional figures and the surface area and volume of basic.
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Problem of the Day If the figure shown is folded into a cube so that 6 is on the top, what number would be on the bottom? 2.
Surface Area of Pyramids
3D Figures and Nets.
EXAMPLE 1 Identify and name polyhedra
Fun with Pyramids Miss Hudson’s Maths
Polyhedron A polyhedron is simply a three-dimensional solid which consists of a collection of polygons, joined at their edges. A polyhedron is said to.
Chapter 12 Surface Area and Volume. Topics We Will Discuss 3-D Shapes (Solids) Surface Area of solids Volume of Solids.
10-1 Introduction to Three-Dimensional Figures Warm Up
10-1 Introduction to 3D figs
Prisms Fun with by D. Fisher
8-7 Introduction to Three-Dimensional Figures Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes.
Surface Area and Volume Chapter 12. Exploring Solids 12.1 California State Standards 8, 9: Solve problems involving the surface area and lateral area.
OBJECTIVE AFTER STUDYING THIS SECTION, YOU WILL BE ABLE TO FIND THE SURFACE AREAS OF PRISMS 12.1 Surface Areas of Prisms.
SOLID FIGURES SPI
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