YouTube on MSNOpinion

Find the missing value using two secant lines from a point outside of the circle

Learn how to solve problems with secant lines. A secant line is a line that intersects a circle at exactly 2 points in ...
YouTube on MSNOpinion

How to find the measure of an angle that is inscribed from a secant and tangent line

Learn how to solve problems with secant lines. A secant line is a line that intersects a circle at exactly 2 points in ...
BBC

Intersecting and parallel lines

Parallel lines are lines that never cross each other - they keep the same distance apart from each other. When two lines intersect, the opposite (X) angles are equal. On parallel lines, alternate (Z) ...
Scientific American

How Mathematical Objects Are like People and Other Mysteries of Intersection Theory

Hannah Larson is obsessed with understanding what happens when two or more mathematical objects intersect. Larson, a mathematician at the University of California, Berkeley, and a research fellow at ...