## LifeIsADangerousGame 2 years ago Could someone please help me with this Geometry? I need someone to check my answers and help me solve some questions. Thank you! ^_^

@jim_thompson5910 You really helped last time :D Would you mind helping me again if you're not busy?

3. Mertsj

Which ones do you need help with?

Sorry about that, I got kicked out :/ @Mertsj I need help with any one of the questions that don't have an answer highlighted in yellow. Any of the ones that do I need them to be checked. :)

5. Mertsj

So number 2. It is an isosceles triangle. Do you know what an isosceles triangle is?

Yes, a isosceles triangle is a triangle that has two equal sides and two equal angels.

7. Mertsj

That is very good. So what is the sum of all the angles of a triangle?

The sum of all the angles of a triangle is 180 degrees.

9. Mertsj

So why can't you get number 2?

10. Mertsj

Angle B is 35, angle C is 35 so you should be able to find angle A

Ohh, I'm sorry, I forgot to do that one, I do know how to do that one sorry! D:

12. Mertsj

So # 3. There is a theorem that says that the exterior angle of a triangle is equal to the sum of the two remote interior angles. Do you know what that means? Do you know what an exterior angle of a triangle is?

13. Mertsj

So do you need help or not?

I do I'm sorry, my computer keeps freezing.

I don't really understand that theorem. @Mertsj

16. phi

which question ?

I need all of the questions checked that have answers checked and then all of the questions that don't have yellow highlights I need help figuring out

18. phi

Your yellow answers (btw use blue next time, I could not read yellow) are correct for question 3, you should think "If I know 2 angles of the triangle, I can figure out the 3rd" use the idea that a straight line is 180ª to find that 2nd angle. Can you do that ?

19. phi

If that is too cryptic, I am saying that angle 4 plus angle 2 add up to 180 degrees

20. phi

for question 6 remember this: |dw:1362333669480:dw|

Sorry, I didn't get a notification For #3, is Angle 2 10?

Actually, it'd be 74. @phi

Which means Angle 1 is 106?

24. phi

for question 3, you know angle 3 (64) and you know angle 2 (74) angles 1,2 and 3 add to 180

Ohh okay, so Angle 1 is 42?

26. phi

yes

27. phi

question 7 is another "angles add upto 180 in a triangle)

I'm not sure how to solve that one :/

29. phi

Did you get 6 ? Vertical angles are =

are the angles opposite each other when two lines cross

31. phi

yes, so if you know angle 4 you know angle 2

Yes, but I can't seem to get the right answer for it. None of the answers would add up to 180

33. phi

what is angle 2 ? what is angle 3 ?

Angle 3 is 54, but I don't know what Angle 2 is, but it's the same as Angle 4

35. phi

Didn't you answer question 5 ?

Yes but is that the right answer?

37. phi

you can check: the 3 angles in the triangle add up to 180

38. phi

but up above I told you Your yellow answers (btw use blue next time, I could not read yellow) are correct

Okay yes, that answer is correct. So angle 4 is 64 degrees. Ohh, all my yellow answers are correct? Sorry I didn't understand that D: I'll do Blue next time, thanks. So if Angle 4 is 64 degrees then Angle 2 is 64 degrees. So if Angle 2 is 64 degrees and Angle 3 is 54, then Angle 1 is 62 degrees?

40. phi

yes. And that process of reasoning you went through is really what is important to learn. Geometry is just a way to set up problems that get you to think that way.

I'll do some of the practice questions they have for me after I'm done my assignments. :D

Could you help me with the questions on Page 5 and the last page?

43. phi

I just notice question 18 looks wrong.

Did I mix up Alternate Exterior Angles?

45. phi

angle 5 and angle 8 are vertical angles. The fancy names refer to angles on the 2 different parallel lines (if that makes sense)

So would Angle 1 be the correct answer?

47. phi

yes. alternate means "other side of the transversal" and exterior means outside the 2 parallel lines.

Ohh okay, I got mixed up because this is a different angle of the the diagram than I am used to :/

49. phi

for question 22 and 23, the idea is the angles on the "right side parallel line" are equal to their corresponding angles on the left side parallel line. so 6 matches (corresponds) with 2

50. phi

using corresponding angles and knowing vertical angles are equal, you can figure out everything (except the goofy names they give the different angle pairs)

Does that mean Angle 6 and 7 are 140?

52. phi

yes, 6 and 7 are vertical. I draw a narrow x to remind me, because the angles look = |dw:1362337901794:dw|

That's a good idea, I'll remembe that

54. phi

25 looks wrong.

Well 3x = 6 would be 3x/3 = 6/3 right?

56. phi

how do you get from 3x+5=11 to 3x = 6

Ohh you're right, that should be subtraction >.<

58. phi

they are asking how you get from the first statement to the middle statement I would subtract 5 ( or add -5 which makes their reasons a little goofy)

And then 26 would be E instead

60. phi

yes

It's kinda confusing because it seems like they skipped a step

62. phi

you mean for 3x+5=11 given 3x = 6 subtraction property x = 2 division what step is missing ?

The division property

64. phi

you could "show the work" 3x+5 = 11 3x +5-5 = 11-5 subtract -5 3x = 6 simplify 3x/3 = 6/3 divide by 3 x = 2 simplify

True, with these I think I'll do the problem that way I know what's missing

66. phi

for 27, it looks like addition property of angles. You can get that one by process of elimination.... it's the only reason that mentions angles.

For 28, I think it's C

No that's not right

Because 29 needs to be C

70. phi

you are looking for the reason for changing M<XYZ into 4n-6

I think 28 is Substitution

72. phi

another rule out all the add and subtract properties which do not fit. you are left with substitution, which makes sense. you are substituting 4n-6 for M<XYZ

So now we have Addition, Subtraction, and Division left. 29 would be Addition?

74. phi

how do you get from 4n-6=2n+46 to 2n -6= 46

...it'd be subtraction wouldn't it? They subtracted 2n from 4n?

76. phi

If you have 2n's on the right side, you do you make it no n"s ?

77. phi

if you have 2 apples and you take away 2 apples , how many apples do you have left ?

No apples left

79. phi

and we call that ADD? SUBTRACT ? DIVIDE?

Subtracting

81. phi

yes they subtracted 2n from both sides on the right 2n - 2n is 0 on the left 4n - 2n is 2n (4 apples take away 2 apples leaves 2 apples... thinking apples instead of a letter n might make this seem more obvious)

Yea, I'll practice these more too

83. phi

almost done. question 30

85. phi

yes they added +6 to both sides 2n-6=46 becomes 2n - 6+ 6 = 46+6 addition property 2n = 52 simplify

And then finally 31 is E :D

87. phi

yes, I think you got everything correct

88. phi

now your teacher will think you are a genius and make you teach everybody else.

XDDD She'll be asking the wrong person :b

90. Mertsj

But some of us will know who the REAL genius is.!

O.o well yea