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If you had a Iscocles triangle bca and the vertex c was 21y+13 and <b was 6y+1 would <a be congruent to <b since it states that they are congruent? and what would angle a be and what would y equal???
please help either I am thinking to hard or Im stupid lol :)

  • geometry -

    I will assume in your triangle , angle A = angle B

    so 21y+13 + 6y+1 + 6y+1 = 180
    33y = 165
    y = 5

    then angle A = 31° , angle B = 31° and angle C = 118°

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