Thursday, December 23, 2010

Problem 549: Parallel lines, Transversal, Angles

Proposed Problem
Click the figure below to see the complete problem 549.

Problem 549: Parallel lines, Transversal, Angles.
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Level: High School, SAT Prep, College geometry

Posted by Antonio Gutierrez at 7:45 PM
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4 comments:

  1. c .t . e. oDecember 24, 2010 at 11:23 AM

    extend AO to E, E on L2
    => x external ang of AEB

    ReplyDelete
  2. Neha PrabhuneDecember 27, 2010 at 12:10 AM

    Let line BO intersect L1 in point F.
    As L1 || L2,measure angle OFA = b...(alternate angles test)
    Consider triangle OFA, by exterior angle theorem
    measure angle OFA + measure angle FAO =measure angle AOB.
    Hence, a + b = x

    ReplyDelete
  3. APOSTOLIS MANOLOUDISJune 22, 2016 at 12:28 PM

    Brings ray Οy // L 1,then x=<BOA=<BOy+<yOA=a+b.
    APOSTOLIS MANOLOUDIS 4 HIGH SHCOOL OF KORYDALLOS PIRAEUS GREECE

    ReplyDelete
  4. MarcoDecember 26, 2023 at 1:27 AM

    Draw a line thru O which is // to L1 & L2

    ReplyDelete

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