Geometry- Finding The Area Flashcards

1
Q

straight line drawn between two points on a circle

A

Chord

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2
Q

: the length of a straight line through the center of an object or space.

A

Diameter

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3
Q

Pytagorean theorem

A

a^2+b^2=c^2

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4
Q

Diameter of a circle formulas

A

2r

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5
Q

Circumference formula circle

A

2piR

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6
Q

Area of a circle

A

PiR^2

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7
Q

Square perimeter

A

4s

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8
Q

Area square

A

S^2

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9
Q

Rectangle area

A

Lw

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10
Q

Rectangle perimeter

A

2L+2W

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11
Q

Triangle area?

A

1/2 bh

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12
Q

Equalateral triangle formula

A

A= squareroot of 3/4 S^2

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13
Q

Area of a portion in a circle

A

(0/360) Pir^2

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14
Q

Area in a half circle

A

A= 1/2 pir^2

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15
Q

Area of parallelogram

A

A=bh

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16
Q

Area of a trapezoid

A

A= 1/2(b1+b2) h

17
Q

Rhombus area

A

A= 1/2 d1 d2

18
Q

Triangle with a given angle and not a right triangle

A

A= 1/2 ab sin c

19
Q

Scalene triangle

A

S= a+ b+ c/ 2

20
Q

Area of scalene triangle

A

A= squareroot S(S-a)(S-b)(s-c)

21
Q

Area of a circle with right triangle

A

As= Acircle - AT
=PI R^2 - 1/2 bh