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

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Question 1064468: Isosceles trapezoid LMNP with LN congruent to PN, and diagonals LN and PM
Show LN = PM
Click here to see answer by ikleyn(52754)

Question 1064967: If cos x = sin (20 + x ) degrees and 0 degrees < x < 90 degrees , the value of x is ___ degrees
Click here to see answer by Boreal(15235)

Question 1064967: If cos x = sin (20 + x ) degrees and 0 degrees < x < 90 degrees , the value of x is ___ degrees
Click here to see answer by MathTherapy(10549)

Question 1064585: what are the statement and proof of this given: line segment RI is parallel to line segment FE?
Click here to see answer by ikleyn(52754)

Question 1064522: Given: Line TR bisects angle STU and angle 1 is congruent to angle 2
Prove: Line ST is congruent to Line UT
I do not understand how to solve this. Can someone please help me to answer this geometric proof on bisecting lines. Thanks.
Click here to see answer by ikleyn(52754)

Question 1065002: please help me prove the diagonals of an isosceles trapezoid are equal.
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Question 1065063: given: debf is a parallelogram AE=CF
prove: ABCD is a parallelogram
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Question 1065262: Given: Circle C with radius r and circle D with radius s
Prove: Circle C is similar to circle D
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Question 1065417: assume that point d is a midpoint of ab. find x and each segment length. ad = 2x - 1, ab = 6x - 20.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1065419: assume <1 and <2 are complementary angles. find m<1 and m<2 if m<1 = (3x)� and m<2 = (5x+2)�
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Question 1065566: If angle QPS is congruent to angle TOR prove angle APR is congruent to TPS
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Question 1065590: My question is " in the following figure, congruent segments are marked. Prove angle ACF is congruent with angle AEB.
Link to picture here: http://mgh-images.s3.amazonaws.com/9780131879690/5106-4.2-41IP1.png
So I have started with my statement/reason proof with what was given.
Line AF is congruent with line BA.
Line BC is congruent with line FE.
But I don't know where to go from here? I have been thinking about trying to prove Line CD and DE are congruent, but i don't know if that is right or not.
Would someone please help me please? I am really struggling with proofs.
Click here to see answer by Emilym1234(10)

Question 1065983: given: ABCE is an isosceles trapezoid with ray AB is parallel to ray EC, and ray AE is congruent to ray AD, prove: ABCD is a parallelogram
Click here to see answer by Theo(13342)

Question 1066355: Point P is on the directed line segment from point X(−6, −2) to point Y(6,7) and divides the segment in the ratio 1:5. What are the coordinates of point P?
Click here to see answer by josmiceli(19441)

Question 1067086: AB II CD
DB Ξ AC

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Question 1067127: In the city where Aiko lives, there are 4 buses that go from point A to point B, 3 buses that go from point B to point C, and 5 buses that go from point C to point D.
How many different ways can Aiko use the buses to travel from A to B to C to D?
There are ___ different ways that Aiko can use the buses to get from A to B to C to D.
Click here to see answer by Boreal(15235)

Question 1067719: construct a parallelogram when one of its sides is 4.4 cm and its two diagonals are 5.6 cm and 7cm. Measure the other side
Click here to see answer by KMST(5328)

Question 1067719: construct a parallelogram when one of its sides is 4.4 cm and its two diagonals are 5.6 cm and 7cm. Measure the other side
Click here to see answer by ikleyn(52754)

Question 1067855: The four sides of a quadrilateral ABCD are tangents to a circle.Prove that mAB+mCD = mBC+mAD.
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Question 1067851: Prove that the tangents passing through the end points of a diameter of a circle are parallel to each other.
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Question 1068169: In quadrilateral ABCD, AB is congruent to CD, AB is parallel to CD, and BF and DE are perpendicular to diagonal AC at points F and E
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Question 1068176: Isosceles trapezoid ABCD is constructed with the lime the extra through the center. If the isosceles trapezoid is highlighted using a scale factor of one third in the line is drawn through the center of the new dilated figure, what relationship with a new line have with ZX
Click here to see answer by ikleyn(52754)

Question 1068241: I need help with a two column proof for the following:
If the diagonals of a trapezoid bisect each other, prove it is an isosceles trapezoid.
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Question 1068288: Two circles intersect at A and B.From B two diameters BC and BD are drawn which cut the circles at C and D respectively.Prove that CAD is a straight line.
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Question 1068287: AB is a chord of a segment of a circle and C is any point on the arc of the segment .Prove that m
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Question 1068287: AB is a chord of a segment of a circle and C is any point on the arc of the segment .Prove that m
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Question 1068287: AB is a chord of a segment of a circle and C is any point on the arc of the segment .Prove that m
Click here to see answer by KMST(5328)

Question 1068465: BD=CD,EC=4,AE=2,AFD and BFE are straight lines. claims that AF=DF.Do you agree?Explain your answer
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Question 1068656:
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Question 1068804: Two circles,centre A and B touch one another at C.Through C a straight line PCQ is drawn cutting the circles at P and Q.Prove that AP || BQ.
Click here to see answer by ikleyn(52754)

Question 1069862: MN=PQ,MQ=NP
Prove MNQ=PQN congruent
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Question 1070359: please help! picture attached below
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Question 1070414: Given: Prove: Trianlge(ABC) ~ Triangle(FED)
Email me for the picture of the diagram.
Click here to see answer by ikleyn(52754)

Question 1070414: Given: Prove: Trianlge(ABC) ~ Triangle(FED)
Email me for the picture of the diagram.
Click here to see answer by Alan3354(69443)

Question 1070414: Given: Prove: Trianlge(ABC) ~ Triangle(FED)
Email me for the picture of the diagram.
Click here to see answer by MathTherapy(10549)

Question 1070409: In triangle ABC, D is a point on segment AC and E is a point on CB such that DE and AB are parallel segments. If AD and DC are congruent and DE= 3, find the length of AB
Click here to see answer by KMST(5328)

Question 1070569: If angle por is bisected by ray oq what is the value od x?

Click here to see answer by ikleyn(52754)

Question 1070643: Finding true conjecture
X Y
0 3
1 2
2 1
3 0
4 -1

Click here to see answer by Edwin McCravy(20054)

Question 1071174: I have to do a proof it's- Isosccles Traingle ABC with AD =AB
Prove Traingle BDA ~ Traingle ABC
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Question 1071182: in rectangle abcd, diagonals bd and ac are drawn. prove angle dba is congruent to angle cab.
Click here to see answer by ikleyn(52754)

Question 1072035: Segment EA is an altitude of triangle DEF. Find the area of the triangle. (5 points)
Triangle DEF with altitude AE is shown. Point D is at negative 2, 1. Point E is at 2, 5. Point F is at 6, 1. Point A is at 2, 1

14.5
15
15.5
16

Click here to see answer by Fombitz(32388)

Question 1072711: AB= 1.8 BC= 8 AC=8.4 Does the triangle have a right angle?

Click here to see answer by Alan3354(69443)

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