Questions on Geometry: Proofs in Geometry answered by real tutors!

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Question 640484: 1. name two different ways to continue each pattern
~a,b,c....z
~a,z,b...
2.seven people meet and shake hands with one another
~using inductive reasoning write a formula for the number of handshakes if the number of people is n.
3.the fibonacci sequqnce consists of the pattern 1,1,2,3,5,8,13...
~what is the ninth term in the pattern?
~using a calculator look at the succesive ratios of one term to the next.make a conjecture.
~list the first eight terms of the sequence formed by finding the differences of succesive terms in the fibonacci sequence.
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Question 641832: how to construct a rhombus when diagnol AC=5.6cm and BD=6.5cm IS GIVEN
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Question 642658: The question is:
Can you think of any way to prove from Euclid's postulates that for every line l
(a) There exists a point lying on l?
(b) There exists a point not lying on l?
I'm thinking it has something to do with Euclid's parallel postulate, but I'm not sure. I have never written proofs before, so I am just having a difficult time trying to formulate this properly. Any help would be appreciated. Thank you!
Click here to see answer by jim_thompson5910(28598)

Question 643021: Name two different ways to continue this patter. 1,1,2
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Question 643016: I need help solving this proof,
PQ 5 RS. Prove PR 5 QS ____________________
P Q R S
Professor gave us this much
1.PQ=RS given
2.QR=QR Reflexive property
3.
4.
5.PR=QS
We are to do 3,4,5 and give reason, I have no clue how to do this. Help!
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Question 644444: what is the largest number of different regions into which the plane can be divided by n lines?
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Question 646113: m∠RST = m∠TSV = m∠RSV = 49° Find x and m∠TSV

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Question 646714: Can you use the Law of Syllogism to make a conclusion wtih these statements? *

If a number ends in 6, then it is divisible by 2. If a number ends in 4, then it is divisible by 2.
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Question 646706: Use the Law of Detachment to make a conclusion for the following question.

If two lines are parallel, then they do not intersect. Line l is parallel to line m.

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Question 647424: If PQ=7 and QR=10, then PR=?
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Question 647910: given m<4=m<5
prove m
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Question 647915: l. H
l
l
l. O
l
l
l. W
l_________D
pretend that the l's are a line. this is the angle i have. the question is
given:o is midpoint of line HW
OW=WD
prove: HO=WD
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Question 647916: l. H
l
l
l. O
l
l
l. W
l_________D
pretend that the l's are a line. this is the angle i have. the question is
given:o is midpoint of line HW
OW=WD
prove: HO=WD
Click here to see answer by solver91311(16897)

Question 649444: Please answer these questions: I NEED IT NOW ASAP PLS PLS PLS I BEG YOU.
* http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png
and * http://static.tumblr.com/o5ekeuz/hBhma6td6/abcc.png
PLEASE THANKS I NEED IT NOW
Click here to see answer by lynnlo(4164)

Question 649460: PLEASE OPEN THIS LINKS. SO THEY ARE LINK PLS OPEN THEM. Please answer these questions: THEY ARE LINKS SO PLEASE OPEN THEM.
* http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png
and * http://static.tumblr.com/o5ekeuz/hBhma6td6/abcc.png
PLEASE THANKS I NEED IT NOWI NEED IT NOW ASAP PLS PLS PLS I BEG YOU.
Click here to see answer by Alan3354(30993)

Question 649956: what are the five parts of a proof
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Question 650170: use slopes to show that the quadrilateral whose vertices are (1.-1), (4,1),(2,2), and (5,4) is a parallelogram
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Question 650170: use slopes to show that the quadrilateral whose vertices are (1.-1), (4,1),(2,2), and (5,4) is a parallelogram
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Question 650100: Write a two column proof:
If one angle in a linear pair is a right angle, then the other is also a right angle.
Given:
Prove:
7 statements and 7 reasons.
I need this now, please. Thanks! ASAP, I beg you.
Click here to see answer by jim_thompson5910(28598)

Question 650235: Given: Angle HKJ is a straight angle, KJ bisects angle HJK.
Prove: Angle IJK is a right angle.
Please show each step to this geometric proof.

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Question 650270: Segment BE is congruent to segment BC; angle 3 is congruent to angle 1; angle 2 is congruent to angle 4 whats the proof
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Question 651731: segment cd bisects segment rs, but segment rs does not bisect cd. Is this possible?
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Question 651731: segment cd bisects segment rs, but segment rs does not bisect cd. Is this possible?
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Question 652724: How would I prove that x=6 given the equation: x/3+2=x ?
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Question 652950: Please help me with this proof
Given: <1 and<2 are supplementary, and <3 and<4 are supplementary
<2 is congruent to <3
Prove: <1 is congruent to <4
There are seven steps to this problem !
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Question 652981: A_____B_____C_____D_____E Given: AC=CE AB=DE Prove: BC=CD 9 steps
1-AC=CE Given
2-AB=DE Given
3-AC=AB+BC Seg. Add. Post.
4-CE=CD+DE Seg. Add. Post.
5-AC=CB+DE Sub. Prop.
6-AB+BC=CD+DE Sub Prop.
7-AB+BC=CB+AB Sub Prop
8-BC=CD Sub Prop.
9-?
What am I missing or not understanding?
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Question 654646: Point C is the midpoint of AB and B is the midpoint of CD. Prove that AC is congruent to BD.
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Question 655373:
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Question 656010: AB+BC=AC
AB=XY
XY+BC=AC
What is the reason?
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Question 656010: AB+BC=AC
AB=XY
XY+BC=AC
What is the reason?
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Question 656366: if 2(x/3-1) = 9, then x= 33/2
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Question 656365: if 2(x/3-1) = 9, then x= 33/2
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Question 656367: For Each proof Identify the hypothesis, argument, and conclusion.
Given: AB = BC
Prove: AC = 2BC
Statement Reason
1 AB = BC Given
2 AB + BC = AC Segment Addition Postulate
3 BC + BC = AC Substitution Property of Equality
4 2BC = AC Distributive Property
5 AC = 2BC Identity
Do I write a hypothesis, argument, and conclusion for each statement?

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Question 656722: Hi! so I have this to be proven: I have an illustration of this square
upper left corner: L
upper right corner: O
lower left corner: V
Lower right corner: E
Given: LOVE is a square
Prove: Diagonals bisect each other
I dont really know how to do it, or to place ASA postulate, or right angles,... dont know i dont get it please help me understand, I will have a test next week. help me please thank you
Click here to see answer by lynnlo(4164)

Question 656720: Given: LOVE is a square
Prove: Diagonals bisect each other
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Question 657024: Given: angle ABD is a right angle.
angle CBE is a right angle.
Prove: angle ABC is congruent to angle DBE
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Question 657289: Needing help understanding proof.
Statements
1. CD is perpendicular to CE
2. Angle DCE is a right angle
3. ?
4. M Angle DCE = m angle 1 + m angle2

5. ?
6. <1 and <2 are complementary
Reasons
1. Given
2. ?
3. Def. of a right angle
4. Addition ?
5. Subsitution
6. Congruent Complements ?
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Question 658004: -4x + 10 = -5x + 18
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Question 658006: 6(x - 6) = x(16 - 7)
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Question 658337: If a line goes through the midpoint of line AB, then it is equidistant from points A and B. Prove the converse statement.
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Question 658589: Two colum proofs
Given: B is between A and D, C is between B and D
Prove: AD = AB+BC+CD
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Question 659040: Suppose B is the midpoint of AC. AB = 5x and BC = 3x + 4. Find AB.
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Question 659031: complete each proof
given: BC+DE
Prove: AB+DE=AC
Proof:
Statement Reasons
BC=DE ___________
__________ Seg. Add. Post.
AB+DE=AC ____________

Given: Q is between P and R, R is between Q and S, PR=QS
Prove: PQ=RS

Statements Reasons
Q is between P and R given
PQ+QR=PR ________________
R is between Q ans S ________________
___________________ Seg. Add. Post.
PR=QS ________________
PQ+QR=QR+RS ________________
PQ+QR-QR=QR+RS-QR ________________
_________________ Substitution

I need help please answer by today if you can

Click here to see answer by MathLover1(6649)

Question 659934: a quadrilateral has how many vertices o (0,0) p(3,5) Q(8,6) and R(5,1) determine whether OPQR is a parallelogram
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