Tutors Answer Your Questions about Geometry proofs (FREE)
Question 613739: Help with geometry! Solving proofs. I'm not really sure :/ I've filled in a few blanks, but can someone help with the others & explain how you got to that answer? thank youuu! Attached below is the triangle
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http://assets.openstudy.com/updates/attachments/4fbbf56ee4b055653430f3e4-avieira-1337718148254-photo21.jpg
Click here to see answer by jim_thompson5910(35256)  |
Question 613754: Question in geometry about solving proofs. I really have no idea.. I think number 2. is AC/AC and number 3. is triangle CBA = triangle CDA, but can someone help me with the rest? Thank youu (:
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http://assets.openstudy.com/updates/attachments/4fbbfe64e4b0556534310054-avieira-1337720440340-page25c.gif
Click here to see answer by jim_thompson5910(35256) |
Question 613764: Question in geometry about solving proofs. Not really suree, help please!
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http://assets.openstudy.com/updates/attachments/4fbc05b3e4b055653431098c-avieira-1337722308434-photo21.jpg
Click here to see answer by solver91311(24713)  |
Question 615993: Can someone PLEASE help me with this problem? THANK YOU!
Let z1 = r1(cos 1 + isin 1) and z2 = r2(cos 2 + isin 2) be two complex
numbers. Show that if z2 (doesn't equal to) 0, then (z1/z2)=(r1/r2)[cos(1 2) + isin(1 2)].
Click here to see answer by stanbon(75887) |
Question 617361: Look at the figure shown below.
The figure shows triangle ABC. A segment joins point D on side BC and point E on side BA. Segment BD is 18 and segment BE is 14.
Which statement must be true to prove that segment DE is parallel to segment CA?
Answer
1 : EA = 2 : DC
4 : DC = 1 : EA
6 : DC = 7 : EA
7 : EA = 9 : DC
Click here to see answer by richard1234(7193)  |
Question 359104: A rural homeowner had his TV antena held in place by three guy wires.
a) if the stakes are on the level ground and the distances from the stakes to the base of the antena are the same, what is true about the lenghts of the wires? why?
b) if the stakes are not on level gruond yet are the same distance from the base to the antena, explain wheather you can make the same conclusion regarding the lenght of the wire.
Click here to see answer by laurarcongdon(1) |
Question 622238: hi , i was wondering if you can help me in writing proofs ? i've been learning the two columns way with " statement " & " reason " . i have absolutely no idea where to start
ex: - lines PA and PB are tangent to circle O , lines OA and OB are radii and OP intersects the circle at C . Prove angle AOP is congruent to angle BOP
Click here to see answer by lynnlo(4176) |
Question 622903: Gina wrote the following paragraph to prove that the segment joining the midpoints of two sides of a triangle is parallel to the third side.
Given: ∆ABC
Prove: The midsegment between sides Line segment AB and Line segment BC is parallel to side Line segment AC .
Draw Triangle ABC on the coordinate plane with point A at the origin (0, 0). Let point B have the ordered pair (x1, y1) and locate point C on the x-axis at (x2, 0). Construct point D so it is the midpoint of Line segment AB . Point D has coordinates at Ordered pair the quantity 0 plus x sub 1, divided by 2; the quantity 0 plus y sub 1, divided by 2 by the Distance between Two Points Postulate. Construct point E so it is the midpoint of Line segment BC . The ordered pair of point E is Ordered pair the quantity x sub 1 plus x sub 2 divided by 2; the quantity 0 plus y sub 1 divided by 2 by the Distance between Two Points Postulate. The slope of Line segment DE is found to be 0 through the application of the slope formula: The difference of y sub 2 and y sub 1, divided by the difference of x sub 2 and x sub 1 is equal to the difference of the quantity 0 plus y sub 1, divided by 2, and the quantity 0 plus y sub 1, divided by 2, divided by the difference of the quantity x sub 1 plus x sub 2, divided by 2 and the quantity 0 plus x sub 1, divided by 2 is equal to 0 divided by the quantity x sub 2 divided by 2 is equal to 0 When the slope formula is applied to Line segment AC the difference between y sub 2 and y sub 1, divided by the difference of x sub 2 and x sub 1 is equal to the difference of 0 and 0, divided by the difference of x sub 2 and 0 is equal to 0 divided by x sub 2 is equal to 0 , its slope is also 0. Since the slope of Line segment DE and Line segment AC are identical, Line segment DE and Line segment AC are parallel by the definition of parallel lines.
What is the flaw in Gina’s proof?
Click here to see answer by mykasha(37) |
Question 625055: Given the sets:
A={3,4,5,6,7}
B={6,7,8,9}
C={2,4,6,8}
List the elements of this set
B ∩ (AᴜC)
Click here to see answer by oscargut(2103)  |
Question 625056: Given the following sets, select the statement below that is true.
A={1, a, t, e, r}
B={1, a, t, e}
C={t, a, l, e}
D={e, a, t}
B ⊆C and C ⊆B
A ⊂B and D ⊂A
D ⊆B and B ⊆D
D ⊆B and B ⊆D
A ⊆C and D ⊂A
Click here to see answer by oscargut(2103) |
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