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

Tutors Answer Your Questions about Geometry proofs (FREE)

Question 669624: Given in a plane
A is Perpendicular to B, B is Perpendicular to c and C || d
Prove a ||d
Click here to see answer by jim_thompson5910(35256)

Question 669705: if the angle cfe is a right angle, then the measure of cfe equals 90 degrees what is the definition called?

Click here to see answer by jim_thompson5910(35256)

Question 669825: given:m/1=90
prove:L is perpendicular to m
Click here to see answer by Alan3354(69443)

Question 669905: Write a two column proof.
Given= <3 is congruent to <4
Prove <1 is congruent to <2
Click here to see answer by solver91311(24713)

Question 670086: What kind of statements would you prove with a geometric proof
Click here to see answer by MathLover1(20855)

Question 670511: Given- the measure of angle 1 equals 115, the measure of angle 2 equals 65 prove- m=n
Click here to see answer by solver91311(24713)

Question 670728: Here is the picture I made to go along with this: http://tinypic.com/r/14n0ifc/6
Given: AB || CD ; BC || CD
Prove: angle B is congruent to angle D
Please help as soon as possible, & thanks!
Click here to see answer by Theo(13342)

Question 670809: Please help me solve this problem. I need a conclusion and reason for m<5+m<6=180 degrees.
Please and thank you!
Click here to see answer by MathLover1(20855)

Question 670869: if measure of angle ABC + measure of angle
Click here to see answer by lynnlo(4176)

Question 670995: 8x-5-2x=2x+1-2x reason for this
Click here to see answer by ReadingBoosters(3246)

Question 671886: Algebra: Angle 4 is congruent to angle 8. Choose the correct statement.
A.

p is sometimes parallel to r.

B.

p is always parallel to r.

C.

p is never parallel to r.
Click here to see answer by jim_thompson5910(35256)

Question 673059: if ab=cd then ab line is congruent to cd line whats the postualate?
Click here to see answer by MathLover1(20855)

Question 673397: given that <1 and <5 are supplementary. prove that m is parallel to n
Click here to see answer by Alan3354(69443)

Question 673397: given that <1 and <5 are supplementary. prove that m is parallel to n
Click here to see answer by stanbon(75887)

Question 673399: Do midpoints ALWAYS separate congruent lines? such as: (segment)AG where X is the mid point, would (segment)AX be congruent to (segment)XG?
Click here to see answer by stanbon(75887)

Question 673458: Proofs
Given: M is the midpoint of segment AK; segment AM= 5x+3; segment MK=6x-4
Prove:x=7
What do I do?

Click here to see answer by stanbon(75887)

Question 674344: Supply the reasons missing from the proof shown below
given: line ab = line ac, angle BAD = angle CAD prove: line ad = line bc
Click here to see answer by Theo(13342)

Question 674511: How to do the staements and reasons if the given is a\\b, <2 =<3 and the prove is c//d ?
Click here to see answer by solver91311(24713)

Question 675193: Write a coordinate proof for each statement. The three segments joining the midpoints of the sides of an isosceles triangle form another isosceles triangle.
Click here to see answer by Edwin McCravy(20081)

Question 675434: How can I proof this? :
Given: X is the midpoint of line segment WY and line segment VZ
Prove: VW = ZY
Click here to see answer by vleith(2983)

Question 675434: How can I proof this? :
Given: X is the midpoint of line segment WY and line segment VZ
Prove: VW = ZY
Click here to see answer by Onmyoji.S(32)

Question 675473: help me please on this proof.
Given: parrallelogram HIJK
triangle HOI is congruent to triangle JOI
Prove HIJK is a rhombus
Click here to see answer by Edwin McCravy(20081)

Question 675664: in a quadrilateral ABCD A=[3x+5],B=[3x-10],C=[x+25]and D=[2x-15] find the angle of the quadrilateral.
Click here to see answer by MathLover1(20855)

Question 676287: Please show me how to prove AE = BD

Click here to see answer by stanbon(75887)

Question 676444: Hi. I really don't get how to do proofs. I get the steps of first use given last use what you prove, but I don't really get where to put what or what order they go in.
Click here to see answer by jpvn2015(54)

Question 676585: a.)The measure of angle __ = the measure of angle W X Z + the measure of angle Z X Y. (Angle Addition Postulate) b.)The measure of angle W X Z + the measure of angle Z X Y = _. (Def. of Complementary Angles) c.) The measure of angle W X Z is equal to _. (Transitive Prop. of Equality) d.) ____ = 90 (Substitution) e.) 3x = ____ (Subtraction Prop. of Equality) f.) x = ____ (Division Prop. of Equality)
Click here to see answer by fcabanski(1391)

Question 676702: Use a paragraph proof to prove the corresponding angles postulate:
Given: line AB is parallel to line CD
Prove: Corresponding angles are congruent
EMAIL ME AT underseanemo@yahoo.com IF YOU NEED AN IMAGE.
Click here to see answer by MathLover1(20855)

Question 676746: What is the conclusion for:
ALl residents of Raleigh do not like worms.
If you like to fish then you like worms
Click here to see answer by MathLover1(20855)

Question 676738: Given: B is between A and C, AB=3x+2x, BC=35-x, AC=73
Prove: x=7
Click here to see answer by MathLover1(20855)

Question 676738: Given: B is between A and C, AB=3x+2x, BC=35-x, AC=73
Prove: x=7
Click here to see answer by Onmyoji.S(32)

Question 677174: Angle 4 is congruent to angle 8. Choose the correct statement.

Click here to see answer by jim_thompson5910(35256)

Question 677174: Angle 4 is congruent to angle 8. Choose the correct statement.

Click here to see answer by Onmyoji.S(32)

Question 678654: A horse is tied with the help of a rope to a peg if the horse is made to move keeping the rope tight, what geometrical path wiil the horse trace?
Click here to see answer by stanbon(75887)

Question 678876: Given: -3r+1/2=4
Prove: r=-7/6
Click here to see answer by ReadingBoosters(3246)

Question 681623: a triangle is four vertices and each of them has an external and internal angle
Click here to see answer by Alan3354(69443)

Question 681623: a triangle is four vertices and each of them has an external and internal angle
Click here to see answer by Onmyoji.S(32)

Question 681937: what postulate or therom states that BD=BD?
Click here to see answer by Edwin McCravy(20081)

Question 681937: what postulate or therom states that BD=BD?
Click here to see answer by Onmyoji.S(32)

Question 682141: in triangle ABC, the altitudes to the side AB and AC are congruent. Prove that quadrilateral PBCQ is:
a. trapezoid
b. isosceles trapezoid
Click here to see answer by vidya p(12)

Question 682713: How proof this?
1)4* cos ^4 x + 4* sin ^2 -3 = cos ^2 2X
2) cos ^4 - sin ^4X = cos 2X
Click here to see answer by solver91311(24713)

Question 683322: Given: segment TX is parallel to segment SY, angle TXY is congruent to angle TSY
Prove: Triangle TSY is congruent to Triangle YXT
the diagram looks like this:
http://www.mathplanet.com/media/44005/parallelogram1_499x300.jpg
But the letters from left to right are:
Top: T then X.
Bottom: S then Y.

Click here to see answer by solver91311(24713)

Question 683619: How do you solve this?
Given: Angle DEG and angle DEF are right angles; Angle EDG is congruent to Angle EDF
Prove: EF is congruent to EG
Click here to see answer by Onmyoji.S(32)

Question 683416: Please help me with this proof?
Given: Segment BC is the perpendicular bisector of segment AD, segment AB is congruent to segment ED
prove: Triangle ABC is congruent to triangle DEC
please help
Click here to see answer by Onmyoji.S(32)

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, 3691..3735, 3736..3780, 3781..3825