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Math > 12.1 12.2 And 12.4 > Flashcards

12.1 12.2 And 12.4 Flashcards

0
Q

Edge

A

Line segment formed by the intersection of two faces

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1
Q

Polyhedron

A

Solid bounded by polygons called faces that enclose a single region of space

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2
Q

Vertex

A

Point where three or more edges meet

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3
Q

12.1 eulers Thm

A

The number if faces vertices and edges. Is related by f+v=e+2

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4
Q

Surface

A

All points on a polyhedrons faces

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5
Q

Convex polyhedron

A

Any two points on its surface can be connected by a line segment that lies entirely inside or on the polyhedron

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6
Q

Regular polyhedron

A

A polyhedron is regular if all it’s all it’s faces are congruent regular polygons and the same number faces meet at each vertex in exactly the same way

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7
Q

Tetrahedron

A

A regular polyhedron with four faces

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8
Q

Octahedron

A

Regular 8 faces

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9
Q

Dodecahedron

A

Regular 12 faces

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10
Q

Isosohedron

A

Regular with 20 faces

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11
Q

Prism

A

A polyhedron that has two parallel congruent faces called bases

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12
Q

Altitude height

A

The perpendicular distance between the bases of a prism

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13
Q

Surgace area of a right cylinder Thm

A

S=2b +ch= 2rh

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14
Q

Right prism

A

Each literal edge is perp to both bases

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15
Q

Surface area

A

The sum of the areas of its faces

16
Q

Surface area of a right prism Thm

A

S=2b+ph

17
Q

Circular cylinder

A

A solid with congruent circular bases that lie in parallel planes

18
Q

Right cylinder

A

A cylinder is right if the segment joining the centers of the bases are perpendicular to the bases

19
Q

Volume

A

Number of cubic units contained in its interior

20
Q

Volume of a cube post

A

The volume of a cube is the cube or thelength of its side

V=s cubed

21
Q

Volume of a prism post

A

V= area of b times height

22
Q

Volume of a cylinder post

A

V = area of b times height = pie r height

Math (18 decks)

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