Question

1) if any angle of parallelogram is two third of its adjacent angle the smallest angle is.
2) the angles of quadrilateral are in the ratio 1:3:7:9 find the measure of the largest angle.
3)each interior angle of a polygon is 135 degree how many sides does it have.
4) a measure of two angles of a quadrilateral are 115 degree and 45 degree and the other two angles are equal find the measures of the equal angles.
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Answer 1

Answer:

Let the mean ratios be x =1x +3x+7x+9x=20x

We know that the sum of all angles of quadrilateral =360%

So 360=20i, e 180

now angle one = 180÷1=180

now angle two=180÷3=60

now angle three =180÷7=25

now angle four =180÷9=20

therefore largest angle = 180