Question

Name the property that justifies the statement.
If angle 1 minus 30 degrees equals 90 degrees, then angle 1 equals 120 degrees

Answer 1

substitution and subtraction proporties

Answer 2

I only have.
A. Addition.
B. Subtraction.
C. Reflexive.
And D. Distributive.
Would it just be Subtraction?

Answer 3

yes

Answer 4

Can you help with a few more?

Answer 5

if i can, sure.

Answer 6

What is a valid reason for stating that angle 1 is congruent to angle 2?

Answer 7

They are alternate interior angles.

Answer 8

Which of the following is a valid reason for stating thatangle 1 is congruent to angle 2?

Answer 9

All right angles are congruent.

Answer 10

. Angles 1 and 2 are adjacent because they share a common side
B. Angles 1 and 2 are both right angles because the lines are perpendicular
C. Angles 1 and 2 are supplementary angles because they form a straight line
D. Angles 1 and 2 are vertical angles because they are opposite sides of an "X\ those are the answers.

Answer 11

its B

Answer 12

Use the given property to complete the statement.
Division: 3 times angle B equals 60 degrees, B equals blank

Answer 13

A. 180°
B. 30°
C. 20°
D. 57°

Answer 14

C

Answer 15

Which property is illustrated by the following statement?
angle X equals angle Y and angle Z equals angle Y, so angle X equals angle Z

Answer 16

substitution.

Answer 17

A. Symmetric
B. Transitive
C. Addition
D. Distributive

Answer 18

B. because transitive is a type of substitution.

Answer 19

Use the following problem to answer the question below:
Given: 3 times the quantity x minus 4 equals 33
Prove: x equals 15.

Statements

Reasons


3 times the quantity x minus 4 equals 33

Given


3 x minus 12 equals 33

A


3 x minus 12 plus 12 equals 33 plus 12

B


3x + 0 = 45

C


3 x equals 45

D


x equals 15

Division Property of Equality

Answer 20

What is the reason for D?

Answer 21

because when you have 3x=45 you divide both sides by the 3 to get the x alone, and 45 divided by 3 is 15.

Answer 22

What property would that be?

Answer 23

division

Answer 24

Which of the following is a valid reason for stating thatangle 1 is congruent to angle 2?

Answer 25

they are vertical angles and vertical angles are congruent.

Answer 26

Use the following problem to answer the question below:
Given: 3 times the quantity x minus 4 equals 33
Prove: x equals 15.

Answer 27

Statements

Reasons


3 times the quantity x minus 4 equals 33

Given


3 x minus 12 equals 33

A


3 x minus 12 plus 12 equals 33 plus 12

B


3x + 0 = 45

C


3 x equals 45

D


x equals 15

Division Property of Equality
What is the reason for B?

Answer 28

(Im not trying to get answers, Im checking them with you)

Answer 29

the 0 comes from the minus 12 plus 12 and is just there for show, while the 45 comes from the 33 plus 12

Answer 30

is that the addition identity property?

Answer 31

so if its how i remember geometry last year, the reason is Additive.

Answer 32

yes. same thing.

Answer 33

additive identity, or additive? Theres two different ones.

Answer 34

additive

Answer 35

Additive of equality

Answer 36

huh?

Answer 37

Use the following problem to answer the question below:
Given:the measure of angle ABE equals the measure of angle CBDProve:the measure of angle ABD equals the measure of angle CBE.
Statements

Reasons


the measure of angle ABE equals the measure of angle CBD

A


the measure of angle ABE equals the measure of angle ABD plus the measure of angle DBE

B


the measure of angle CBD equals the measure of angle CBE plus the measure of angle DBE




the measure of angle ABD plus the measure of angle DBE equals the measure of angle CBE plus the measure of angle DBE

C


the measure of angle ABD equals the measure of angle CBE

D

What is the reason of D?

Answer 38

is there a picture?

Answer 39

nvm, I got it.

Answer 40

its substitution, i drew my own picture.