Lines, Angles, and Triangles

SAT Math· difficulty 3/5

Lines ell1\\ell_1 and ell2\\ell_2 are parallel. A transversal forms an angle of 108°108° with ell1\\ell_1. What is the measure of the alternate exterior angle on ell2\\ell_2?

  • A

    36°36°

  • B

    108°108°

    check_circle
  • C

    90°90°

  • D

    72°72°

Explanation

Alternate exterior angles formed by a transversal cutting parallel lines are congruent: 108°108°.

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