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1.
altitude: segment joining both faces and ⊥ to both; used interchangeably w/ height

2.
Area of a sphere (A): TA=4πr²

3.
bases: lie in || planes and are ≅ polygons

4.
circle of intersection: intersection of a plane and a sphere

5.
formula for Lateral Area of prisms: LA=ph (p=perimeter of base, h=height of prism)

6.
height: length of altitude; used interchangeably w/ altitude

7.
Lateral Area (LA): sum of the areas of the lateral faces

8.
Lateral area of a cone (LA): LA=πrl

9.
Lateral area of cylinder (LA): LA=2πrh (r=radius, h=height of cylinder)

10.
Lateral Area of regular pyramid: LA=nF (n=number of faces, F=area of face)

LA=½pl (p=perimeter of base, l=slant height)

LA=½pl (p=perimeter of base, l=slant height)

11.
lateral faces: parallelograms that intersect each other in parallel segments callled lateral edges

12.
regular pyramid: has a regular polygon as its base

13.
slant sleight (cursive l): altitude of lateral faces

14.
three properties of a regular pyramid: 1. all lateral faces are isoceles ∆s 2. all lateral edges are congruent 3. the altitude of the pyramid meets the base at the center of the polygon

15.
Total Area formula for prisms (TA): TA=LA + 2B (B=area of bases)

16.
Total area of a cone (TA): TA=πrl + πr²

17.
Total area of a pyramid (TA): TA=LA+B

18.
Total area of cylinder (TA): TA=2πrh + 2πr²

19.
Volume for prisms: V=Bh (B=area of base, h=height of prism)

20.
Volume of a cone (V): V=1/3πr²h

21.
Volume of a cylinder (V): V=πr²h

22.
Volume of a pyramid (V): V=1/3Bh (B=area of base, h=height of pyramid)

23.
Volume of a sphere (V): V=4/3πr³

## Chapter 12 VocabularyStudy online at quizlet.com/_6hacy |

table

glossary

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