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

Algebra ->  Algebra  -> Geometry-proofs -> Questions on Geometry: Proofs in Geometry answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Geometry: Proofs in Geometry Solvers Lessons Answers archive Quiz In Depth

 Question 609265: I am not so sure if my question is right for here but here I go. The zero vector, 0, is defined by the following statement, D5: AB=0 If and only if A and B are the same point. What are the components of 0? Click here to see answer by math-vortex(472)

 Question 610004: Prove: The sum of the measures of the four angles of a quadrilateral is 360 degrees. (Quadrilateral Sum Conjecture). I think it may have something to do with triangles. I need help. Thank you. Click here to see answer by scott8148(6628)

 Question 610011: Line segment BA and line segment BC are tangent to circle O at A and C, respectfully. How would I write a two column proof to prove that line segment BA is congruent to line segment BC????please help i"m so lost!!!! Click here to see answer by scott8148(6628)

 Question 610181: In a normal deck of 52 cards, what is the probability of drawing 3 aces in a row? Click here to see answer by flame8855(424)

 Question 610178: What is the area of a rectangle with a length of 15 and a width of 4? 19 or 38 or 60 or 225? Click here to see answer by flame8855(424)

 Question 610281: < x and < y are complementary. If m < x = a + 3 and m < y = 2a + 6, what is the measure of < x? pick which answer is correct. 60 or 30° or 33° or 66° Click here to see answer by flame8855(424)

 Question 610390: A marble is drawn from a jar containing 5 red, 5 blue, 3 green and 2 yellow marbles. That marble is replaced and another marble is drawn. What is the probability that both marbles are green? Click here to see answer by stanbon(57219)

 Question 610552: Find the slope of a line parallel to a line that contains the points (9, -3) and (-3, 8). Click here to see answer by stanbon(57219)

 Question 610667: ∠a and ∠b are supplementary. If m∠a = 2x + 4 and m∠b = 4x - 10, what is the measure of ∠a? Click here to see answer by jim_thompson5910(28476)

 Question 610902: i was wondering how to prove that two triangle are the same Click here to see answer by solver91311(16868)

 Question 612717: Hello, I'm here because I need help doing a proof for my geometry class. I need to prove how the volume of a pyramid is 1/3bh. Is there any way you can help me? Click here to see answer by richard1234(5390)

 Question 612991: What is the relationship between an inscribed angle and its intercepted arc? Click here to see answer by Alan3354(30959)

 Question 612992: What is the relationship between a radius and a tangent at the point if tangency? Click here to see answer by Alan3354(30959)

 Question 612993: What kind of triangle is inscribed in semicircles? Click here to see answer by jim_thompson5910(28476)

 Question 612988: What is the relationship between a central angle and its intercepted arc? Click here to see answer by jim_thompson5910(28476)

 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 http://assets.openstudy.com/updates/attachments/4fbbf56ee4b055653430f3e4-avieira-1337718148516-page25c.gif http://assets.openstudy.com/updates/attachments/4fbbf56ee4b055653430f3e4-avieira-1337718148254-photo21.jpg Click here to see answer by jim_thompson5910(28476)

 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 (: http://assets.openstudy.com/updates/attachments/4fbbfe64e4b0556534310054-avieira-1337720440118-photo2.jpg http://assets.openstudy.com/updates/attachments/4fbbfe64e4b0556534310054-avieira-1337720440340-page25c.gif Click here to see answer by jim_thompson5910(28476)

 Question 614534: Which of the following are measurements of the sides of a right triangle? a) 25,23,7 b) 9,6,3 c) 18,15,4 d) none of the above Click here to see answer by stanbon(57219)

 Question 615347: I need the proof in other words the statements and the justifications- All right angles are congruent. (Right Angles Are Congruent Theorem Click here to see answer by Edwin McCravy(8880)

 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(57219)

 Question 617151: given: AB is congruent to DE PROVE: triangle ABC is congruent to triangle DEC Click here to see answer by Edwin McCravy(8880)

 Question 617579: Gary runs on a path along the edge of a rectangular park. The park is 1,560 feet long and 750 feet wide. Gary runs the path 4 times every morning. How many miles does Gary run? (1 mile = 5,280 feet) Click here to see answer by nerdybill(6948)

 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(5390)

 Question 617781: what rules/theoroms do u need to know for the regents to do a proof Click here to see answer by richard1234(5390)

 Question 618985: Given: triangle ABC with vertices A(-6,-2), B(2,8), and C(6,-2). Line segment AB has midpoint E, and line segment AC has a midpoint F. Prove: ADEF is a parallelogram and ADEF is NOT a rhombus. Click here to see answer by solver91311(16868)

 Question 619740: write a valid conlusion based on the given information: m<1+m<2=90 degrees Click here to see answer by math-vortex(472)

 Question 621338: name at least 3 geometric figures in non-Euclidean Geometry. In a single sentence, what is the basic difference between Euclidean and non-Euclidean geometry? Click here to see answer by fcabanski(872)

 Question 621346: is the earth consider as a a point? why? Click here to see answer by KMST(1864)

 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 621777: AB=CD. Give the the reason for each statement. Click here to see answer by Alan3354(30959)

 Question 622127: how do you prove OP congruent to QR when the given is OP = MN and MN = QR Click here to see answer by solver91311(16868)

 Question 622169: I am confused over whether you need to use all of your givens if it is solvable without all the information. Click here to see answer by matineesuxxx(27)

 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(4155)

 Question 622241: How do I prove two triangles congruent in a quadrilateral? I already have two angles congruent, because it is in the given info. Also they gave me a pair of congruent lines, what's next? Is it another angle? Please help. Click here to see answer by Edwin McCravy(8880)

 Question 622797: what is not an acceptable form of justification to use in geometry when justifying statements and angles? Click here to see answer by richard1234(5390)

 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)

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