Geometry

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If the measures of the angles of a triangle are in the ratio 1:3:5 , what is the measure in degrees of the smallest angle ?

a. 10
b. 20
c. 60
d. 180

thanks , and would be greatly appreciated if answered ASAP .

  • Geometry -

    b.20

    because
    1:3:5

    1+3+5=9

    180/9=20

    20:60:100

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