SOLUTION: please help me with this, thank you.
The measures of angles A and B of parellogram ABCD in the ratio of 2:7 find the measure of angle A.
Algebra ->
Geometry-proofs
-> SOLUTION: please help me with this, thank you.
The measures of angles A and B of parellogram ABCD in the ratio of 2:7 find the measure of angle A.
Log On
Question 422468: please help me with this, thank you.
The measures of angles A and B of parellogram ABCD in the ratio of 2:7 find the measure of angle A. Found 2 solutions by htmentor, sudhanshu_kmr:Answer by htmentor(1343) (Show Source):
You can put this solution on YOUR website! For a parallelogram, we know that the sum of angles A and B must be equal to 180 degrees.
So we have A + B = 180 (1)
And the ratio of angle A to angle B is 2/7 -> A/B = 2/7, or B = (7/2)*A
Eliminating B in (1) gives A + (7/2)*A = 180 -> A = (2/9)*180 = 40 degrees.
