Whiteboard
ClassFlow

Class Flow: Lines, Rays, Line Segments

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This lesson is an introduction to the basic geometric figures: lines, rays, and line segments. The definition and naming conventions for each figure are explained. An assessment section follows.
Handout
Oswego City School District

Regents Exam Prep Center: Geometry Vocabulary Resources

For Students 9th - 10th
A list of geometry definitions and a matching activity.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Midpoints and Segment Bisectors

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Apply the definitions of midpoint, segment bisector, and angle bisector.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Midpoints and Segment Bisectors

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to calculate midpoints and use the definitions of segment bisectors and perpendicular bisectors.
Lesson Plan
Better Lesson

Better Lesson: Coordinate Grid and Geometry

For Teachers 6th - 7th Standards
Students make connections between the coordinate grid and Geometry by finding the distance of line segments using the coordinate plane. This lesson includes a detailed lesson plan, slides containing notes and problems, and a...
Activity
Oswego City School District

Regents Exam Prep Center: Bisect a Line Segment and an Angle

For Students 3rd - 8th Standards
This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.
Activity
Oswego City School District

Regents Exam Prep Center: Copy a Line Segment and an Angle

For Students 3rd - 8th Standards
This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.
Unit Plan
Cuemath

Cuemath: Lines

For Students 3rd - 8th Standards
Learn all about lines. This lesson targets what is a line and the different types. Check-out the interactive simulations to know more about the lesson and try your hand at solving a few interesting practice questions at the end of the page.
eBook
Mathigon

Mathigon: Geometry: Euclidean Geometry: Definitions

For Students 9th - 10th Standards
This lesson focuses on Euclidean Geometry terminology; such as line, point, line segment, congruence, circle, radius, ray, and more. It defines each term and provides an example of each.
Unit Plan
Texas Education Agency

Texas Gateway: Coordinate Geometry: Special Segments

For Students 9th - 10th Standards
The student will derive and use the slope and midpoint formulas to verify geometric relationship that include parallelism and perpendicularity of lines. Then, the student will determine an equation of a line parallel or perpendicular to...
Unknown Type
Mr. Martini's Classroom

Mr. Martini's Classroom: Basic Geometry: Points, Lines, and Angles

For Students 3rd - 6th Standards
Students can review basic geometric terms using these self-check, multiple choice questions. Three levels of questions are provided.
Whiteboard
ClassFlow

Class Flow: Geometry Line Vote

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] In this lesson the teacher will use geometry and spatial sense to distinguish between point, ray, line, line segment and angle. The students will review vocabulary for these terms and then...
Handout
The Math League

The Math League: Line Segments

For Students 3rd - 5th Standards
This tutorial provides an explanation of line segments.
Unknown Type
Khan Academy

Khan Academy: Divide Line Segments

For Students 9th - 10th Standards
Figure out the coordinates of a point between two other points that give a certain ratio. For example, find a point C so that it is two-thirds of the way between point A and B. Students receive immediate feedback and have the opportunity...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Basic Geometric Definitions

For Students 6th - 8th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify points, rays, lines, and line segments. Students examine guided notes, review guided practice, watch instructional videos and...
eBook
Math Planet

Math Planet: Pre Algebra: Geometry Fundamental Statements

For Students 9th - 10th Standards
Provides examples and a video lesson that introduce fundamental statements of geometry.
Handout
Geometry Help

Geometry Help: Lines and Angles

For Students 9th - 10th Standards
Explains the basic concept of lines and angles with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Unknown Type
Khan Academy

Khan Academy: Divide Line Segments

For Students 9th - 10th Standards
Figure out the coordinates of a point between two other points that give a certain ratio. For example, find a point C so that it is two thirds of the way between point A and B.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Basic Geometric Definitions

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept introduces students to the basic principles and definitions of geometry, including points, lines and planes. tudents examine guided notes, review guided...
Unit Plan
Math.com

Math.com: Coordinate Geometry

For Students 5th - 8th Standards
The lesson investigates coordinate geometry. Definitions, examples, and a worksheet are available.
Handout
CK-12 Foundation

Ck 12: Geometry: Segments Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide reviews how to measure the distance between two points and the Ruler Postulate. It also introduces congruency/congruent segments and midpoint.
Handout
Math Open Reference

Math Open Reference: Points and Lines

For Students 9th - 10th Standards
A complete reference guide to points, lines, and planes. It provides definitions and interactive activities that enhance further explanation.
Unit Plan
Khan Academy

Khan Academy: Equation Practice With Segment Addition

For Students 7th - 8th
Given an information about the lengths of line segments, form and solve an equation in order to find the lengths of the segments. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
Unit Plan
Math Is Fun

Math Is Fun: Line

For Students 2nd - 5th Standards
Find definitions and images of line, line segment, and ray.