Unit 2 Flashcards

1
Q

What is the definition of perpendicular?

A

2 lines, rays or segments that intersect to form right angles

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2
Q

What is the symbol for perpendicular?

A

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3
Q

What is a perpendicular bisector?

A

A line, ray or segment that intersects a segment at its midpoint, and forms right angles

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4
Q

When you see “perpendicular bisector,” what should you mark immediately?

A

Congruent segments and right angles

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5
Q

What determines the distance from a point to a line?

A

The length of the perpendicular line segment

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6
Q

What is true about any point on an angle bisector?

A

It is equidistant to both sides of the angle

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7
Q

What is true about any point on a perpendicular bisector of a segment?

A

It is equidistant to the endpoints of the line segment

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8
Q

What does equidistant mean?

A

Equal (or same) distance

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9
Q

What is the definition of parallel lines?

A

2 coplanar lines that do not intersect

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10
Q

What is the symbol for parallel?

A

||

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11
Q

How do you mark lines parallel?

A

With the same number of arrows

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12
Q

What is the definition of skew lines?

A

Two noncoplanar lines (that do not intersect)

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13
Q

What is the slope intercept formula?

A

y = mx + b

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14
Q

What is the slope of any vertical line?

A

Undefined

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15
Q

What is the slope of any horizontal line?

A

0

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15
Q

What is the form of the equation of any vertical line?

A

x = a (a number)

16
Q

What is the form of the equation of any horizontal line?

A

y = b (a number)

17
Q

What is true about the slopes of parallel lines (on a graph)?

A

They are equal (the same)

18
Q

What is true about the slopes of perpendicular lines (on a graph)?

A

They are opposite reciprocals (negative reciprocals)

19
Q

To find the equation of a line, what formula do you use?

A

Point-slope formula

20
Q

How do you find the length of a line segment on a Cartesian graph?

A

Use the distance formula

21
Q

How do you find the distance between any two points on a Cartesian graph?

A

Use the distance formula

22
Q

How do you find the coordinates of the midpoint of a line segment on a Cartesian graph?

A

Use the midpoint formula

23
Q

What is the point slope formula?

A

y - y1 = m(x - x1)

24
Q

If an equation is in standard form (Ax + By + C = 0) What is the formula for slope?

A

m = -A/B

25
Q

What is the midpoint formula on a Cartesian graph?

A

((x1 + x2)/2 , (y1 + y2)/2)

26
Q

What is the distance formula on a Cartesian graph?

A

d = √(x2 - x1)² + (y2 - y1)²