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Geometry > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

Does a point have a size or shape?

A

No

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2
Q

How do you name a line?

A

With two points or an italicised letter

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3
Q

How long does a line extend in either direction?

A

Forever

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4
Q

Does a line have width or height?

A

No

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5
Q

How do you name a plane?

A

With three points or a bold capital letter

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6
Q

Does a plane have width or height?

A

No

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7
Q

How far does a plane extend in any direction?

A

Forever

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8
Q

Where do parallel planes or lines cross?

A

No where

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9
Q

Where do perpendicular lines and planes cross?

A

At 90 degrees

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10
Q

Where do skewed lines cross?

A

No where

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11
Q

Do intersecting planes cross at any particular point?

A

No, but they do cross

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12
Q

How do you name a segment?

A

With two points

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13
Q

Do segments have a distinct length?

A

Yes

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14
Q

How do you name a ray?

A

Two points

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15
Q

Does a day have a distinct length?

A

No

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16
Q

How do you name opposite rays?

A

The shared end point and any other point on the ray

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17
Q

What do two opposite rays form?

A

A line

18
Q

What is the ruler postulate?

A

It allows you to measure segments and find the distance between them

19
Q

What are congruent segments?

A

Segments that have the same length

20
Q

What is the midpoint?

A

A point in the middle that divides a line or segment exactly in half

21
Q

What is a segment bisector?

A

A point, line, or a ray that divides a segment exactly in half

22
Q

What is the distance formula?

A

d= the square root of (x^2-x^1)^2 + (y^2-y^1)^2

23
Q

What is the midpoint formula?

A

M= (x^1+x^2/2, y^1+y^2/2)

24
Q

What is the distance formula do?

A

It’s used to find the distance between two points

25
Q

What does the midpoint formula do?

A

It’s used to find the midpoint between two points

26
Q

How do you identify an acute angle?

A

Angle is less than 90 degree

27
Q

How do you identify a right angle?

A

The angle equals 90 degrees

28
Q

How do you identify an obtuse angle?

A

The angle is greater than 90 degrees

29
Q

How do you identify a straight angle?

A

The angle equals 180 degrees

30
Q

What does it mean if something is complementary?

A

That two angles equal 90 degrees

31
Q

What does it mean if something is supplementary?

A

That two angles equal 180 degrees

32
Q

How do you name an angle that has only to raise attached to the same endpoint?

A

By the vertex point or with three points that are on the angle

33
Q

What must the midpoint be?

A

A vertex

34
Q

How do you name an angle with more than two rays?

A

You must use three letters with the middle letter still representing the vertex

35
Q

What are congruent angles?

A

Angles of the same degree measurement

36
Q

What are adjacent angles?

A

Two angles attached at the same vertex that are right next to each other

37
Q

What are vertical angles?

A

Two angles whose sides are opposite rays

38
Q

What are complementary angles?

A

Two angles who have a sum of 90 angles

39
Q

What are supplementary angles?

A

Two angles who have a sum of 180 degrees

40
Q

What things are we allowed to assume?

A

Angles are adjacent, angles are adjacent and supplementary, angles are vertical

41
Q

What aren’t we allowed to assume?

A

Angles/segments are congruent, angle is a right angle, angles are complementary

42
Q

How do you name a point?

A

A capital letter

Geometry (9 decks)

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