H. Geometry Exam Formulas & Misc. Flashcards

1
Q

Midpoint formula

A

MP = (x₁ + x₂ / 2, y₁ + y₂ / 2)

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2
Q

What is the symbol for conjunction and what is it read as

A

∧; “and”

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3
Q

What is the symbol for disjunction and what is it read as

A

∨; “or”

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4
Q

What is the “symbol” for conditional statements and what are they read as

A

p –> q; “if p, then q”

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5
Q

What is the “symbol” for inverse statements

A

~p –> ~q

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6
Q

What is the “symbol” for converse statements

A

q –> p

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7
Q

What is the “symbol” for contrapositive statements

A

~q –> ~p

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8
Q

What is the “symbol” for biconditional statements and what are they read as

A

p <-> q; “p if and only if q”

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9
Q

What is the “symbol” for law of detachment

A

p –> q
p
———
∴q

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10
Q

What is the “symbol” for law of syllogism

A

p –> q
q –> r
———
∴p –> r

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11
Q

Slope formula

A

m = y₂ - y₁ / x₂ - x₁

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12
Q

Slope-intercept form

A

y = mx + b

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13
Q

Standard form

A

Ax + By = C

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14
Q

Point-slope formula

A

y - y₁ = m (x - x₁)

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15
Q

Describe the slope of parallel lines

A

Same

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16
Q

Describe the slope of perpendicular lines

A

Negative reciprocal

17
Q

A horizontal line has a slope of what

A

Zero

18
Q

A vertical line has a slope of what

A

Undefined

19
Q

What intersect at the circumcenter

A

Perpendicular bisectors

20
Q

What intersect at the incenter

A

Angle bisectors

21
Q

What intersect at the centroid

A

Medians

22
Q

What intersect at the orthocenter

A

Altitudes