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@jim_thompson5910 You really helped last time :D Would you mind helping me again if you're not busy?
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. :)
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.
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.
So why can't you get number 2?
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:
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?
So do you need help or not?
I do I'm sorry, my computer keeps freezing.
I don't really understand that theorem. @Mertsj
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
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 ?
If that is too cryptic, I am saying that angle 4 plus angle 2 add up to 180 degrees
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?
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?
question 7 is another "angles add upto 180 in a triangle)
I'm not sure how to solve that one :/
Did you get 6 ? Vertical angles are =
are the angles opposite each other when two lines cross
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
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
Didn't you answer question 5 ?
Yes but is that the right answer?
you can check: the 3 angles in the triangle add up to 180
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?
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?
I just notice question 18 looks wrong.
Did I mix up Alternate Exterior Angles?
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?
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 :/
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
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?
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
25 looks wrong.
Well 3x = 6 would be 3x/3 = 6/3 right?
how do you get from 3x+5=11 to 3x = 6
Ohh you're right, that should be subtraction >.<
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
It's kinda confusing because it seems like they skipped a step
you mean for 3x+5=11 given 3x = 6 subtraction property x = 2 division what step is missing ?
The division property
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
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
you are looking for the reason for changing M
I think 28 is Substitution
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
So now we have Addition, Subtraction, and Division left. 29 would be Addition?
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?
If you have 2n's on the right side, you do you make it no n"s ?
if you have 2 apples and you take away 2 apples , how many apples do you have left ?
No apples left
and we call that ADD? SUBTRACT ? DIVIDE?
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
almost done. question 30
Would that be C? Addition?
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
yes, I think you got everything correct
now your teacher will think you are a genius and make you teach everybody else.
XDDD She'll be asking the wrong person :b
But some of us will know who the REAL genius is.!
O.o well yea
Thanks again Phi, I appreciate it! One of these days I'll be good at math!