Quote:
In the above figure, \(\ell\)\(_1\) and \(\ell\)\(_2\) are parallel. m = 150 and n = 120.
Quantity A |
Quantity B |
The length of \(AB\) |
The length of \(AC\) |
With geometry problems first identify all known values for the figure.
In this case, we know that because of the rules of parallel lines cut by a transversal that angle B = angle m = 150.
We also know that because of opposite angles that angle C = angle n = 120.
Then, according to the sum of degrees on a line that the interior angle of the triangle adjacent to angle C = 180 - 120 = 60 and that the interior angle of the triangle adjacent to angle B = 180 - 150 = 30.
Finally, due to the proportionality of triangles, we know that the side opposing a larger angle is larger itself. Therefore, length AB which opposes the 60 degree angle C > length BC which opposes the 30 degree angle B. Select Choice A.