CK-12 Foundation
Ck 12: Geometry: Linear Pairs
[Free Registration/Login may be required to access all resource tools.] Identifying adjacent angles and vertical angles formed by intersecting lines
CK-12 Foundation
Ck 12: Geometry: Angle Pairs
[Free Registration/Login may be required to access all resource tools.] Finding the measures of angle pairs including the measure of missing angles by using given information.
CK-12 Foundation
Ck 12: Geometry: Complementary Angles
[Free Registration/Login may be required to access all resource tools.] This concept introduces students to complementary angles. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
CK-12 Foundation
Ck 12: Geometry: Corresponding Angles
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify corresponding angles formed when a line intersects two other lines. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Geometry: Corresponding Angles
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify corresponding angles formed when a line intersects two other lines. Students examine guided notes, review guided practice, watch...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Vertical Angles
Find a quick, concise explanation of vertical angles. An example is given and clearly explained.
Math Open Reference
Math Open Reference: Vertical
Learn about vertical lines with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Points, Lines, Planes and Angles
Get independent practice identifying points, lines, rays, planes and angles. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
ClassFlow
Class Flow: Angle Relationships
[Free Registration/Login Required] This flipchart explores angle relationships: supplementary and complimentary, vertical, etc.
CK-12 Foundation
Ck 12: Geometry: Two Column Proofs Intermediate
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to write two-column proofs, and provides proofs for the Right Angle Theorem, Same Angle Supplements Theorem, and Vertical Angles...
Science Education Resource Center at Carleton College
Serc: Westward Ho! How Far Is Yonder Mountain
In this lesson quantitative skills in geologic context are reinforced. Young scholars create a spreadsheet to calculate the distance of a peak using vertical angles sighted from a wagon train heading directly for the peak. The...
ClassFlow
Class Flow: Parallel Lines and Planes
[Free Registration/Login Required] This flipchart defines parallel lines and planes. It defines a transversal, the concept of alternate angles, and vertical angles.
ClassFlow
Class Flow: Braun Chapter
[Free Registration/Login Required] This is a brief discussion between teacher and student using geometrical graphics to explore vocabulary. Vertical angles, linear angles, consecutive points, and collinear points are highlighted.
Government of Alberta
Learn Alberta: Math Interactives: Exploring Parallel Lines (Object Interactive)
Investigate vertically opposite, corresponding, and alternate angles formed by parallel lines and a transversal using this highly interactive Learn Alberta math. Be sure to follow the link to the printable activities, solutions, learning...
Oswego City School District
Regents Exam Prep Center: Geometry Vocabulary Resources
A list of geometry definitions and a matching activity.
CK-12 Foundation
Ck 12: Geometry: Parallel and Perpendicular Lines
[Free Registration/Login may be required to access all resource tools.] Identifying types of lines as parallel lines, perpendicular lines or intersecting lines.
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Archery
[Free Registration/Login Required] Watch this animation as an archer shoots at a target on an angle, and its horizontal and vertical paths and its velocity are explained. An interactive follows where you can manipulate the archer's...
Math Open Reference
Math Open Reference: Areas by Slicing
Learn about alternate exterior angles with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Physics Classroom
The Physics Classroom: Vectors: Forces in Two Dimensions: Addition of Forces
In this tutorial, examine the effect of forces acting at angles to the horizontal, such that the force has an influence in two dimensions- horizontally and vertically.
Physics Classroom
The Physics Classroom: Vectors: Net Force Problems Revisited
Through interactive examples and practice problems, this tutorial helps students understand net force-acceleration problems in which an applied force is directed at an angle to the horizontal.
Other
Hop's Gallery: Perspective Study
This webpage explores traditional perspective drawings as well as contemporary drawings, focusing on their use of horizontal and vertical lines.
Other
Relationships: Dynamics
The dynamics of shape in art and the relationship of shape with the other elements of art. The effects of angles and lines on perception.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Slope & Line Equations
This site from the Northeast Parallel Architectures Center, Syracuse University has a very substantial discussion of math topics slope & line equations. The outline form is quite useful if you need to zero in on one aspect of...
Illustrative Mathematics
Illustrative Mathematics: G Gpe.5 Triangles Inscribed in Circle
In this task, students use ideas about linear functions to determine when certain angles are right angles. They use the fact that two lines (if not vertical or horizontal) are perpendicular when their slopes are inverse reciprocals, as...
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