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-   -   Postulate or theorem (https://www.askmehelpdesk.com/showthread.php?t=178615)

  • Jan 30, 2008, 03:29 PM
    Sarah01
    Postulate or theorem
    Consider triangles ABC and DEF. Side a is congruent to side f. Angle A is congruent to angle F. Angle B is congruent to angle E. What postulate or theorem can be used to prove that the two triangles are congruent?
  • Jan 30, 2008, 04:59 PM
    jiten55
    B = E, A = F

    Hence C = D (Because A + B + C = D + E + F = 180 degrees)

    A = F, a = f,

    Hence triangles are congruent.

    When 3 corresponding angles are equal, and a = f (Sides opposite to equal angles), triangles are congruent.

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