Step-by-step explanation:
let's us consider,
2angles that measures 100° and 60°
and
other 2angles be 3x and 17x
then ,
according to the quadrilateral law,
sum of all angles=360
100+60+3x+17x=360
or, 20x=360-160
or, X=200÷20
or, X=10
Now,
2angles are
or, 3x=3×10=30°
or, 17x=17×10=170°
hence, a quadrilateral has angles that measures 100°, 60°, 30°, 170°.
