Geometry (from the Ancient Greek: γεωμετρία; geo- “earth”, -metron “measurement”) is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space (wikipedia.com).
Below are example questions in geometry basics. Take time to answer each of them. Afterward, you can download the answer at the bottom of the page.
P1) The complement of an angle measures 56°. What is the measure of the angle?