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# Lesson 7 Menu - PowerPoint PPT Presentation

Warm-up Problems Name polygon A by its number of sides. 2. Name polygon B by its number of sides. Find the perimeter of polygon A. Find the perimeter of polygon B. Classify the polygons as regular or irregular. Lesson 7 Menu. Identify three-dimensional figures.

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Presentation Transcript
Warm-up Problems
• Name polygon A by its

number of sides.

2. Name polygon B by its

number of sides.

• Find the perimeter of polygon A.
• Find the perimeter of polygon B.
• Classify the polygons as regular or irregular.
Identify three-dimensional figures.
• Find surface area and volume.
• polyhedron
• regular prism
• pyramid
• regular polyhedron
• Platonic solids
• cylinder
• cone
• sphere
• surface area
• volume
• face
• edges
• prism
• bases
• vertex
Lesson 7 MI/Vocab
Identify Solids

A.Identify the solid. Name the bases, faces, edges, and vertices.

Lesson 7 Ex1
Answer: rectangular prism;Bases: rectangles EFHG, ABDCFaces: rectangles FBDH, EACG, GCDH, EFAB, EFGH, ABCD

Vertices:A, B, C, D, E, F, G, H

Identify Solids

The bases are rectangles. This solid is a rectangular prism.

Lesson 7 Ex1
Identify Solids

B.Identify the solid. Name the bases, faces, edges, and vertices.

Lesson 7 Ex1
Answer: hexagonal prism;Bases: hexagon EFGHIJ and hexagon KLMNOPFaces: rectangles EFLK, FGML, GHMN, HNOI, IOPJ, JPKE

Vertices:K, L, M, N, O, P, E, F, G, H, I, J

Identify Solids

The bases are hexagons. This solid is a hexagonal prism.

Lesson 7 Ex1
Identify Solids

C.Identify the solid. Name the bases, faces, edges, and vertices.

Lesson 7 Ex1
Identify Solids

The base is a circle and there is one vertex. So, it is a cone.

Answer:Base: circle TVertex:Wno faces or edges

Lesson 7 Ex1
Identify the solid.
• A
• B
• C
• D

A. triangular pyramid

B. pentagonal prism

C. rectangluar prism

D. square pyramid

Lesson 7 CYP1
π

π

π

π

π

.

cm2

.

Surface Area and Volume

A.Find the surface area of the cone.

Answer: The cone has a surface area of 75.4 cm2.

Lesson 7 Ex2
π

π

.

π

.

cm3

Surface Area and Volume

B. Find the volume of the cone.

Answer: The cone has a volume of 37.7 cm3.

Lesson 7 Ex2
Surface Area and Volume

The amount of material used to make the tube would be equivalent to the surface area of the cylinder.

Lesson 7 Ex3
.

Surface Area and Volume

Answer: Mike needs about 405 square inches of cardboard for each tube.

Lesson 7 Ex3