Unit 1

Question 1

How do you name a point?

Answer 1

With a single capital letter

Question 2

How do you define a plane?

Answer 2

By 3 noncollinear points

Question 3

What are the ways to name a plane?

Answer 3

With 3 noncollinear points or a script capital letter

Question 4

Two or more points that lie in the same line are called what?

Answer 4

Collinear

Question 5

Three or more points that lie in the same plane are called what?

Answer 5

Coplanar

Question 6

If you draw 3 points that are noncollinear, how many planes go through those points?

Answer 6

One

Question 7

If you draw 2 points, how many planes pass through them?

Answer 7

Infinite

Question 8

What is formed by the intersection of 2 planes?

Answer 8

A line

Question 9

What is formed by the intersection of 2 lines?

Answer 9

A point

Question 10

How do you name a line?

Answer 10

1. With any 2 points and the symbol for line above it
2. With a lowercase letter (no symbol)

Question 11

How do you name a line segment?

Answer 11

Line Segment: With the 2 endpoints and the line symbol above it

Question 12

How do you name a ray?

Answer 12

Ray: With the endpoint first, followed by another point on the ray, with the ray symbol above it

Question 13

What do opposite rays look like?

Answer 13

A line

Question 14

If you draw 2 opposite rays, what do they have in common?

Answer 14

The endpoint

Question 15

What are 2 congruent segments?

Answer 15

2 segments with the same length

Question 16

On a number line what is the coordinate, the number or the letter?

Answer 16

The number

Question 17

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

Answer 17

The absolute value of the difference of the coordinates

Question 18

What does midpoint mean?

Answer 18

Point in the middle of a line segment creating 2 congruent segments

Question 19

What is the midpoint formula on a number line?

Answer 19

M = (A+B)/2

Question 20

What is the difference between definition of midpoint and the midpoint theorem?

Answer 20

Definition compares the 2 smaller segments. Theorem compares smaller to larger segment

Question 21

What is a segment bisector?

Answer 21

A line ray or segment that cuts a segment in half

Question 22

Where is a vertex of an angle?

Answer 22

Where the sides intersect

Question 23

What are 3 ways to name an angle? What is the catch to two of those methods?

Answer 23

1. 3 letter method - vertex must be second
2. Little number method
3. Vertex only method - only if one angle has that vertex

Question 24

How do we measure an angle?

Answer 24

In degrees

Question 25

What is the smallest and largest possible measure for an angle?

Answer 25

Greater than 0º but less than 180º

Question 26

What is an acute angle?

Answer 26

An angle with measure less than 90º

Question 27

What is an obtuse angle?

Answer 27

An angle with measure greater than 90°

Question 28

What is a right angle?

Answer 28

An angle with measure equal to 90°

Question 29

What are congruent angles?

Answer 29

2 angles with the same measure (the same number of degrees)

Question 30

What is the rule involving right angles? (word for word)

Answer 30

All right angles are congruent

Question 31

What are adjacent angles?

Answer 31

Two angles that share a common vertex, share a common side, and do not overlap

Question 32

What is an angle bisector?

Answer 32

A ray that divides an angle in half creating 2 congruent angles

Question 33

What is the difference between the definition of angle bisector and the angle bisector theorem?

Answer 33

The definition compares smaller angle to smaller angle. The theorem compares smaller angle to larger angle

Question 34

What are vertical angles?

Answer 34

The opposite angles formed by two intersecting lines

Question 35

What is the rule with vertical angles? (word for word)

Answer 35

Vertical angles are congruent

Question 36

What is the definition of complementary angles?

Answer 36

2 angles whose measures add up to 90º.

Question 37

Can complementary angles be adjacent?

Answer 37

Yes

Question 38

What is the definition of supplementary angles?

Answer 38

2 angles whose measures add up to 180º.

Question 39

Can supplementary angles be adjacent?

Answer 39

Yes

Question 40

What do we call 2 adjacent supplementary angles?

Answer 40

A linear pair

Question 41

So the rule for linear pair is if two angles form a linear pair, then they are_____?

Answer 41

Supplementary

Question 42

What are the 4 steps when you see a variable (x)?

Answer 42

1. Set up an equation 2. Solve the equation 3. Substitute in for variable 4. Answer the question

Question 43

If the measure of an angle is x°, what is the measure of its complement?

Answer 43

measure of the complement: 90 – x

Question 44

If the measure of an angle is x°, what is the measure of its supplement?

Answer 44

measure of the supplement: 180 – x

Question 45

What is the difference between supplementary and a linear pair?

Answer 45

A linear pair must be adjacent, while supplementary angles do not have to be adjacent

Question 46

What should you mark whenever you have a midpoint?

Answer 46

Congruent segments

Question 47

What should you mark whenever you have a segment bisector?

Answer 47

Congruent segments

Question 48

What should you mark whenever you have an angle bisector?

Answer 48

Congruent angles

Question 49

What should you mark whenever you have vertical angles?

Answer 49

Congruent angles