CBSE Class 9 Answered
1.one angle of a quadrilateral is of 120degree and the remaining three angles are are equal.find each of the three equal angles.
2.if angles A,B,C and D of the quadrilateral ABCD,taken in order,are in the ratio 3:4:6:7,the find all the angles of the quadrilateral.
Asked by | 02 Dec, 2012, 07:10: PM
Expert Answer
1) if one angle is 120 the sum of other three angle=360-120=240
now all the three all equal therfor each one=240/3=80
2)let the angles be 3X,4X,6X,7X
now sum of the angles of quadrilateral=360
therfor 3X+4X+6X+7X=360
or, 20X=360
or,X=360/20=18
Therfor angles of quad are
3X=54
4X=72
6X=108
7X=126
Answered by | 03 Dec, 2012, 11:32: PM
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