I NEED HELP WITH THIS if two angles form a pair of vertical angles, then they are congruent

given ∠1 and ∠3 are vertical angles.

Prove ∠1≅∠3

You are given that ∠1 and ∠3 are verrtical angles.

Answers for the blanks:

A. supplementary angles

B. substitution

C. addition

D. subtraction

E. symmetric

F. m∠1≅m∠1

G. ∠1 = ∠3

$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)