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

Tutors Answer Your Questions about Geometry proofs (FREE)

Question 660937: Given: no diagram shown
Angle 5 is supplementary to angle 6
Angle 7 is supplementary to angle 6
Prove: angle 5 is congruent to angle 7
Click here to see answer by jim_thompson5910(35256)

Question 661425: I am in the 8th grade taking geometry and need to know how to do proofs. Can you help?
Click here to see answer by colliefan(242)

Question 661624: i have a question. what the poop is going on with proofs its so hard and my teacher confuses me.
Click here to see answer by lynnlo(4176)

Question 661744: prove that, if the difference of two numbers is 4, then the difference of their squares is a multiple of 8.
Click here to see answer by htmentor(1343)

Question 661890: What is the reason of angle 1 plus angle 3 plus angle 5 equal 180?
Click here to see answer by Alan3354(69443)

Question 661893: What is the reason of angle 1 plus angle 3 plus 90 equal 180?
Click here to see answer by Alan3354(69443)

Question 661897: What is the reason of angle 1 plus angle 3 equal 90?
Click here to see answer by Alan3354(69443)

Question 661903: What is the reason of angle 4 plus angle 2 equals 90?
Click here to see answer by Alan3354(69443)

Question 662167: angle 2 equals angle 4

given : m<1=m<3 and m<2=m<4
prove : m I NEED THE REASONS!!!!

statements
1 m<1=m<3
2 m<2=m<4
3 m<1+m<2=m<3+m<2
4 m<1+m<2=m<3+m<4
5 m<1+m<2=m
Click here to see answer by Edwin McCravy(20054)

Question 662200: If a liquid is water, then it is composed of hydrogen and oxygen. How can it be false.
Click here to see answer by Edwin McCravy(20054)

Question 662751: I don't quite understand proofs. I need serious help because I have a geometry test coming up and I have a horrible grade in Geometry could you please help me?
Click here to see answer by stanbon(75887)

Question 662786: Given: 3/4x-9=2x+5
Prove: x=-56/5
Click here to see answer by rfer(16322)

Question 662858: Can you write a two column proof for this problem?
Given: B, C, D are between A and E respectively
BC congruent to CD, C is the midpoint of AE
Prove: AD=BE
Click here to see answer by solver91311(24713)

Question 663204: If angle 4 is congruent to angle 3, ray DG bisects angle BDE
Click here to see answer by Alan3354(69443)

Question 663230: Hello
First of all in advance I thank you for the help you give me!
Okay so here is the problem I am having a hard time with.
Instruction:
Write a paragraph proof for this form of Theorem 2-2.
If two angles are supplements of congruent angles, then the two angles are congruent.
Given: <1 and <2 are supplementary
<3 and <4 are supplementary
<2 is congruent to <4
Prove: <1 is congruent to <3
What I have:
By the definition of supplementary angles, m<1 + m<2=180 and m<1 + m<4=180. By substitution, m<1 + m<2= m<1 + m<4. Subtract m<1 from each side. You get m<2= m<4, or angle 2 is congruent to angle 4.
That is all I have so far...
However that would only prove...angle 2 is congruent to angle 4...it wouldn't prove what I need to prove...
May you help me?
Click here to see answer by solver91311(24713)

Question 663868: I don't understand proofs. For example:
Given: Segment AB is congruent to segment TP.
Prove: Segment AT is congruent to segment BP.
There is a line image accompanying it.
<---a--b--------t--p--->
Click here to see answer by jim_thompson5910(35256)

Question 664072: -8(k-4)=8(1-2k)
Click here to see answer by jim_thompson5910(35256)

Question 664053: Given: y=2x+5
y=3x-1
Prove: the solution is (6, 17)
I have to solve this equation in the 2 step method form (Solve on the left and Reasons on the right) i have the first step down(given) but this question stumped me
Click here to see answer by ReadingBoosters(3246)

Question 664181: Please help me solve this problem!
Given: line k is parallel to line p
prove:m<1 is congruent to m<3
i need the statements and reasons! please help me! thank you
Click here to see answer by stanbon(75887)

Question 664715: Instructions: First Prove that triangles are congruent, and then use CPCTC
Given: Angle P and Angle R are right Angle's, M is the midpoint of PR
Prove: Angle N is congruent to Angle Q
Click here to see answer by Edwin McCravy(20054)

Question 664778: given: 2(x+5)= 8(x-7)rove x = 11
Click here to see answer by rfer(16322)

Question 664785: the proof is
Given: AB = CD
prove AC = BD
AB = CD
BC = BC
AB + BC = CD + BC
AB + BC = BD
BC + CD = AC
AC = BD
Click here to see answer by Seutip(231)

Question 664896: The Sum of the measures of the interior angles of any triangle is 180 degrees
Click here to see answer by ewatrrr(24785)

Question 664899: complements of congruent angles are congruent ..
Click here to see answer by MathLover1(20849)

Question 664900: if two lines are perpendicular, they form four right angles ..
Click here to see answer by Alan3354(69443)

Question 664898: if two angles are vertical, then they are congruent ..
Click here to see answer by Alan3354(69443)

Question 664904: whats the proof of extierior angles
Click here to see answer by MathLover1(20849)

Question 665167: Please help me solve : PQ = RS, Prove PR = QS
Click here to see answer by MathLover1(20849)

Question 665856: if triangle ABC is congruent to ACD then what is the postalute?
Click here to see answer by solver91311(24713)

Question 666146: given: measure of angle A = 30 and measure of angle B = 2nd measure of angle A. prove: angle A and B are complemntary
Click here to see answer by ReadingBoosters(3246)

Question 667454: Please help me find the reason for this statement. The Given is: B is between A and D. C is between B and D. The Prove is: AD= BA+BC+CD
Click here to see answer by solver91311(24713)

Question 667465: THE BISECTOR OF
Click here to see answer by lynnlo(4176)

Question 667490: A triangle with < BAC = 20 DEG.and AB=AC. D IS such a point on AB that AD=BC.Then find out < ADC.

Click here to see answer by lynnlo(4176)

Question 667490: A triangle with < BAC = 20 DEG.and AB=AC. D IS such a point on AB that AD=BC.Then find out < ADC.

Click here to see answer by Edwin McCravy(20054)

Question 667490: A triangle with < BAC = 20 DEG.and AB=AC. D IS such a point on AB that AD=BC.Then find out < ADC.

Click here to see answer by AnlytcPhil(1806)

Question 668393: Why do you need definitions to write proofs ?
Click here to see answer by lynnlo(4176)

Question 668503: GIVEN: Line AE is congruent to Line CE
GIVEN: Line AB and Line CD bisect each other
PROVE: Line EB is congruent to Line ED
Click here to see answer by swincher4391(1107)

Question 668557: What are the four ways to determine if triangles are congruent, describe each of the four ways using vocab?
Click here to see answer by Edwin McCravy(20054)

Question 668671: What theorem could be used to explain that AB=ZR, if AB=CD and CD=ZR?
Click here to see answer by swincher4391(1107)

Question 668724: Given: line ab is perpindicular to bc, angle 1 is congruent to angle 2
Prove: angle 3 is congruent to angle 4
Click here to see answer by swincher4391(1107)

Question 668882: 2/3 and 5/8 are they proportional
Click here to see answer by ewatrrr(24785)

Question 668985: In a geometric proof, how do you know what statement to say next, after you state the given? I kind of understand proofs when the teacher gives me each statement, but when i am by myself i am blank!
Click here to see answer by ewatrrr(24785)

Question 669081: if c is the midpoint of aoverb and d lies on aoverc which of the following expressions are also true? a. dc+cb=db b. ad>db c. ad+cb=ab d. ad
Click here to see answer by Theo(13342)

Question 669221: Use coordinate geometry to prove the statement.
The segments joing the midpoints of a rectangle form a rhombus.
A(0,0)
D(0,b)
C(a,b)
B(a,0)
A is on the orgin of the coorndiante plan, while D is located on the Y axis.
B is located on the X axis. C is not n an axis.
Click here to see answer by Edwin McCravy(20054)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690