## anonymous one year ago i need help completing a two columm proof could comeone help me ?

1. anonymous

2. anonymous

@lolwat170

3. anonymous

@Nnesha

4. Nnesha

this is super cool website https://www.mathsisfun.com/geometry/parallel-lines.html

5. Nnesha

scroll down a little you will see this http://prntscr.com/8ksit6 practice

6. Nnesha

got it ? :=)

7. Nnesha

u there ?

8. anonymous

sorry my mom made me go for some ice and no not quit well could you explain

9. Nnesha

just ice or icecream yummmm ...

10. anonymous

no jus t ice for some tea i wish it was icecream

11. anonymous

but anyways could you explain

12. Nnesha

lol it's okay

13. Nnesha

alright well if you just look at the link i gave u u will definitely get the answer : alternate exterior angles exterior means outside of two parallel lines so alternate exterior angles opposite side of transversal lines |dw:1443299612783:dw| in this example b and c are alternate exterior angles and alternate exterior are equal so you can write b=c

14. anonymous

and a= d ?

15. Nnesha

yes right

16. Nnesha

let's say angle b = 20 degree so then angle c =20 bec both angles are the same b = c

17. anonymous

ok ok i got it intill there but i still dont understand what the answer is

18. Nnesha

now look at ur original question given is angle 2 =110 and angle 4 =110 both angles are equal and both angles are outside the two parallel lines

19. anonymous

yea but isnt the operation mad aready ? dont i just have to get the diffinicions

20. Nnesha

yes right so what's the definition ? angle 2 = angle 4

21. anonymous

is it the given ?

22. anonymous

or diffinitopm of congruuent angles ?

23. Nnesha

given is angle 2 =110 and angle 4 = 110 so what's the definition ?

24. Nnesha

|dw:1443300346320:dw| what would be the definition

25. anonymous

m<2+m<4 ?

26. Nnesha

what's alternate exterior angles ?

27. Nnesha

|dw:1443300519812:dw|in this example a and d are alternate exterior angles you just said a=d so yes alternate exterior angles are equal

28. anonymous

im really lost i dont quite understand

29. Nnesha

well take some time practice on this link scroll down a little where u see choose one

30. Nnesha

it tells u the answer http://prntscr.com/8ktbql

31. anonymous

ok give me a sec too lok at it

32. anonymous

33. Nnesha

|dw:1443300776381:dw| replace b with 2 and g with 4 now that pic is same as ur question

34. Nnesha

according to alternate exterior angles angle b and angle g are the same

35. anonymous

so is it vertical angles than

36. Nnesha

how is it vertical what's the definition of vertical angles ?

37. anonymous

isint it two angles that are vertical and equal the same ?

38. Nnesha

vertical angles that are opposite of each other |dw:1443301018790:dw|here a and b are vertical angle s

39. Nnesha

angle 4 is outside the lines so the definition should hve the exterior word

40. anonymous

would it be alternative exterial angles then ?

41. Nnesha

yes right

42. anonymous

so b would be that then ?

43. Nnesha

yes right ..

44. anonymous

ok is c Supplementary Angles

45. Nnesha

yes right or in other words you can say linear pair |dw:1443301315927:dw| in this exxample a and b are linear pair add up to 180 degree

46. anonymous

so i would name them linear pair then ? what is the diffreance

47. anonymous

but there is that same word in the other two woudnt it like be wrong ?

48. anonymous

|dw:1443348098679:dw|

49. Nnesha

no there is a little difference supplementary angles can be any two angles that add up to 180 degree but linear pair should be adjacent

50. Nnesha

|dw:1443301681893:dw| angle a and b can be equal to 180 but they are not linear pair linear pair should form a straight line

51. anonymous

ok i think i understand so would the answer to C be linear pair?

52. Nnesha

yes right bec angle 3 and 4 formed a striaght line

53. Nnesha

straight *

54. Nnesha

so remember angle 4 and angle 4 must add up to 180 they are supplementary angles as well so what would be the last one ?

55. Nnesha

angle 4 and angle 3**

56. anonymous

would those be supplementery angles ?

57. anonymous

or corrisponding angles

58. Nnesha

what is the definition of corresponding angle s?

59. anonymous

to angles that are the same like |dw:1443348941009:dw|

60. anonymous

am i right ?

61. Nnesha

yyee right but we are looking at angle 3

62. anonymous

|dw:1443349090771:dw| would it be like that then ?

63. Nnesha

yes right but i don't think is corresponding angles bec |dw:1443302711965:dw| they didn't give u the angle

64. anonymous

am i wrong ?

65. Nnesha

well the definition is right but i don't think they r looking for corresponding angles

66. Nnesha

it can be supplementary angles or linear pair

67. Nnesha

both are the same bec angle 4 is 110 and angle 3 is 70 so both angles add up to what ?

68. anonymous

to 180 ? and but woudnt it be wrong fro the two lat quwestions to have the same answer

69. Nnesha

|dw:1443303060274:dw| there didn't mentioned any angle so how would we say corresponding hmmm

70. anonymous

|dw:1443349689960:dw| Im confued i thought we were answering this one ?

71. Nnesha

yes

72. anonymous

ok well in that case i got no idea what to put in that one could you give me a clue

73. Nnesha

i'll go with supplementary angles bec if angle 4 is 110 then angle angle 3 is 70 add up to 180

74. Nnesha

or maybe not let me confirm it

75. Nnesha

@freckles

76. anonymous

would this be correct

77. anonymous

im really lost

78. Nnesha

well if that's my work i would also put supplementary angles angles that add up to 180 degree and ofcouse when a straight line formed it is add up to 180 i would put both linear pair and supplementary you can write a little definition with it

79. Nnesha

80. Nnesha

C go with supplementary angles bec the given is m<3+m<4 =180 both angles add up to 180 so yes supplementary would be goood......

81. Nnesha

inshort the question is: is it okay to write both linear pair and supplementary angles for c ?? @freckles

82. freckles

well a linear pair are supplementary why would they be looking for linear pair or supplementary? they already said 3 and 4 are both of those.. it just seems repetitive to say is again but that is true <3+<4=180 since the angles <3 and <4 are supplementary and they are supplementary for the reason that they are a linear pair

83. Nnesha

ye right i don't what they are looking for they already mentioned it |dw:1443305571012:dw|

84. Nnesha

know*

85. Nnesha

we have to prove that angle 3 equal 70 so if if angle 4 and 3 are supplementary and the given is angle 4 =110 110 + angle 3 =180 solve for angle 3 you will get 70 so i'm pretty sure it's okay to repeat the same definition for C and D right or not >>

86. anonymous

ok so how would it all go then ? and thanks for helping you two! i really aprecvhiate it

87. freckles

lol I just don't get it why would they ask a question they already gave the answer to

88. anonymous

well i think that you just have to give the explainating of what they are doing

89. Nnesha

ikr :/

90. freckles

@panfilo084 but they already explained why they have <3+<4=180

91. Nnesha

so then just write definition

92. freckles

the reasons being because they are a linear pair and therefore supplementary

93. anonymous

so how would it tueen out to be then ?

94. Nnesha

lol, c = supplementary and linear bec you said so

95. anonymous

are you sure ?

96. Nnesha

no i was kidding...

97. anonymous

ok ok so what sthe answer then ? im real confued

98. Nnesha

for D you can say given is angle 4 = angle 2 and angle 4 = 110 and according to the definition of linear pair $\rm 110+ angle~ 3=180$ now solve for angle

99. Nnesha

let angle 3 = x $110+x=180$ can you solve for x ?

100. anonymous

angle 3= 70

101. Nnesha

proved.

102. anonymous

or x= 70

103. freckles

for c I would just say "definition of supplementary angles"

104. freckles

the definitely of supplementary angles : a and b are supplementary if a+b=180 and you have <3+<4=180 so that means the definition of supplementary angles was applied

105. freckles

though to me it seems repetitive

106. Nnesha

i think they are testing ur reading skills

107. Nnesha

lel

108. freckles
109. anonymous

well can either of you like put the answers in order beacuse i got confueds woud b= altnate exterior algles C linear pair and sumplemetary D= sumplñementary angles are these answers correct

110. freckles

I guess they want to be sure you know the definition of supplementary angles like they want to be really sure

111. freckles

oops page 6

112. freckles

113. anonymous

well can you make something like i did soo i could now which ones to put ?

114. Nnesha

well i'll put some extra information bec i'm not exactly sure if that's my worksheet i'll answer it like this given is angle 4 = angle 2 and angle 4 = 110 and according to the definition of linear pair $\rm 110+ angle~ 3=180$ angle = 180-110=70

115. Nnesha

for D ^

116. anonymous

thanks what anout B and C

117. Nnesha

and for c i'm agree with frec supplementary angles :D

118. Nnesha

b is correct

119. anonymous

ok so is that all ? are we done with this one ?

120. freckles

well for c I would say definition of supplementary angles

121. Nnesha

yes.. done....

122. freckles

d I would just say I solve the equation above by subtracting :p

123. freckles

subtraction for short don't know if that is the correct phrase they are looking for

124. freckles

but that is what was done to get the result next to d

125. Nnesha

it's okay to show some work you know some teachers are like ...... >.<

126. anonymous

true well hopefully its righ beacuse its worth a lot of points

127. freckles

good luck

128. Nnesha

ye good luck.....

129. anonymous

thanks