All High School Math Resources
Example Question #1 : How To Find An Angle In A Parallelogram
In the parallellogram, what is the value of ?
Opposite angles are equal, and adjacent angles must sum to 180.
Therefore, we can set up an equation to solve for z:
(z – 15) + 2z = 180
3z - 15 = 180
3z = 196
z = 65
Now solve for x:
2z = x = 130°
Grinnell College , Bachelors, Philosophy. Harvard Law School accepted but not yet enrolled, Masters, J.D. .
University of Detroit Mercy, Bachelors, Secondary Education. Concordia University-Portland, Masters, Educational Leadership.
The Master's College and Seminary, Bachelors, English Literature and Biblical Studies (Biblical Languages). The Catholic Uni...