Wolfram Research
Wolfram Math World: Intersection
This page gives a brief discussion of the intersection of sets in mathematics and probability.
Khan Academy
Khan Academy: Ray Intersection With Line
In this seven-question quiz/practice students find where a ray intersects with a line in implicit form.
CK-12 Foundation
Ck 12: Trigonometry: Intersections of Polar Curves
[Free Registration/Login may be required to access all resource tools.] Finding coordinates of intersection of two curves in polar coordinates.
CK-12 Foundation
Ck 12: Geometry: Intersecting and Parallel Lines
[Free Registration/Login may be required to access all resource tools.] Identify intersecting and parallel lines.
Khan Academy
Khan Academy: Ray Intersection With Plane
In this seven-problem quiz/practice students calculate the point at which a ray intersects with a plane in three dimensions.
Geometry Help
Geometry Help: Intersecting Lines and Angles
Explains the basic concept of intersecting lines and angles with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
PBS
Pbs Learning Media: Finding the Intersection
In this Cyberchase video, Inez and Digit identify the location of the transformatron using their knowledge of parallel and intersecting lines.
University of Georgia
University of Georgia: Inter Math: Intersecting Planes
This site gives a description and picture of intersecting planes. Be sure to follow the "More Information," and "Interactive Challenge," links located in the left-hand column for more information about intersecting planes.
Other
800score: Intersecting Angles
Read a description of intersecting lines and all about the different kinds of angles they form. Includes examples.
Texas Instruments
Texas Instruments: Intersection of a Line With a Parabola
In this activity, students use Computer Algebra System (CAS) tools to find intersections of linear and non-linear equations. They confirm their answers by graphing the equations on the calculator.
Texas Instruments
Texas Instruments: Intersecting Lines and Vertical Angles
In this activity, students visualize and explore the angles that are formed when two lines intersect. By measuring angles formed by intersecting lines, they enhance their understanding of vertical angles, supplementary angles, and a...
TeachEngineering
Teach Engineering: Parallel and Intersecting Lines: A Collision Course?
Students act as civil engineers developing safe railways as a way to strengthen their understanding of parallel and intersecting lines. Using pieces of yarn to visually represent line segments, students lay down "train tracks" on a...
Sophia Learning
Sophia: Finding Intersections: Lesson 5
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 5 of 5 in the series titled "Finding Intersections."
Texas Instruments
Texas Instruments: Intersecting Lines and Planes
In these problems, students are asked to find: point of intersection of two lines; coefficients that make two lines parallel; intersection of diagonals of a quadrilateral; and the point of intersection of three planes.
Khan Academy
Khan Academy: Triangle Intersection in 3 D
In this seven-problem quiz/practice, students will calculate whether a point is inside a triangle in 3D.
Texas Instruments
Texas Instruments: Angles Formed by Intersecting Chords, Secants, and Tangents
In this activity, students will investigate properties of angles and arcs formed when chords, secants, and tangents intersect and intercept arcs in a circle. They discover several important theorems concerning circles and arc sizes. They...
Texas Instruments
Texas Instruments: Numb3 Rs: Trawling for an Intersection
Based off of the hit television show NUMB3RS, this lesson is designed to draw a connection between polar and parametric equations, as well as to expose students to the Trawler Problem (involving a fast boat chasing a slower boat which...
Texas Instruments
Texas Instruments: Angles Formed by Two Intersecting Lines
Students will investigate the properties of angles formed by intersecting lines. They examine the definition of adjacent angles, supplementary angles, and vertical angles and learn about two important geometric theorems dealing with...
Khan Academy
Khan Academy: Finding Angle Measures Between Intersecting Lines
Practice finding angle measures between intersecting lines.
University of Georgia
University of Georgia: Inter Math: Intersection of Sets
This site gives a description of intersection of sets along with an example. There are links to related terms, challenging problems, more information, and the interactive check point involving set intersections located in the left-hand...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Intersecting Angles
This site from The Math Forum of Drexel University provides a question posed by a students with a response. The question involves the points of intersection of two intersecting angles.
Oswego City School District
Regents Exam Prep Center: Locus Equidistant From Two Intersecting Lines
The fifth theorem of loci is investigated on this site. Click on the "Topic Index" link to find related practice activities and resources.
Sophia Learning
Sophia: Finding Intersections: Lesson 2
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 2 of 5 in the series titled "Finding Intersections."
Sophia Learning
Sophia: Finding Intersections: Lesson 3
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 3 of 5 in the series titled "Finding Intersections."
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