CK-12 Foundation
Ck 12: Geometry: Distance Between Two Points
[Free Registration/Login may be required to access all resource tools.] In this lesson students measure the distance between two points. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Geometry: Distance Between Two Points
[Free Registration/Login may be required to access all resource tools.] In this concept, students will learn how to measure distances using rulers and grids. Students examine guided notes, review guided practice, watch instructional...
CK-12 Foundation
Ck 12: Angles Outside a Circle
[Free Registration/Login Required] Students will move the points on the line segments to explore anlge measures outside the circle. Click learn more to watch a video and click challenge me to answer a practice question.
PBS
Pbs Learning Media: Patterns in Nature
In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.
Khan Academy
Khan Academy: Midpoint Formula
Find the midpoint of a segment on the coordinate plane, or find the endpoint of a segment given one point and the midpoint. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
PBS
Pbs Learning Media: Two Sightings, Different Information
Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.
Illustrative Mathematics
Illustrative Mathematics: G Gpe, G Co, G Srt Unit Squares and Triangles
For this task, students are shown three unit squares and two line segments connecting two pairs of vertices. They are asked to find the area of a triangle formed by intersecting lines. They can solve it using coordinate geometry or...
Illustrative Mathematics
Illustrative Mathematics: Reflections, Rotations, and Translations
This task uses GeoGebra software, which can be freely downloaded, to explore what happens to the line segments and angles of a triangle when it is reflected, rotated, and translated. Includes printable task sheet for students and a...
ClassFlow
Class Flow: Measure and Draw Angles
[Free Registration/Login Required] This lesson has many student interactive tricks. It is very exciting and gets the students actively engaged as they solve problems on the board. The lesson is an introduction to angles. It also reviews...
Beacon Learning Center
Beacon Learning Center: Anglemania!
Students explore four types of angles in this interactive web lesson.
Oswego City School District
Regents Exam Prep Center: Geometric Constructions
Learn all about the basic geometric constructions in this test prep lesson. You will explore line segments and points, and understand key terms like the terms parallel and perpendicular. Construction activities and interactive online...
Quia
Quia: Geometric Terms Flash Cards
Do you need practice remembering or learning different geometry vocabulary words and definitions? The flash cards at this web site are for you! There is a link to a list of terms with definitions you can click if you want to see if you...
Quia
Quia: Geometric Terms Concentration
Do you need practice remembering or learning different geometry vocabulary words and definitions? This concentration game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if...
Quia
Quia: Geometric Terms Word Search
Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
ClassFlow
Class Flow: Circles Geometry
[Free Registration/Login Required] Students identify segments and lines related to circles and the properties of a tangent to a circle.
Purple Math
Purplemath: Conventions
A "convention" is "just the way a thing is done!". This reference material lists some common conventions (notational assumptions) for geometry and trigonometry.
Oswego City School District
Regents Exam Prep Center: Midpoint of a Line Segment
Examples for using the midpoint formula are given at this site.
The Math League
The Math League: Figures and Polygons
This site provides definitions of different types of polygons and figures.
CK-12 Foundation
Ck 12: Isosceles Triangles
[Free Registration/Login Required] Students are given an Isosceles triangle and are asked to move the point on the line segment to explore how the angle measure changes. Click learn more to watch a video demonstration and click challenge...
Math Open Reference
Math Open Reference: Diagonals of a Square
A complete reference guide to diagonals of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Illustrative Mathematics
Illustrative Mathematics: G Gpe, F Tf Coordinates of Points on a Circle
For this task, students are shown a unit circle in a plane and an angle measured from the x-axis. They must determine the coordinates of the line segment for the angle and answer a question about the sum of the coordinates. The purpose...
Quia
Quia: Spanish 2 Final Exam Review 2003
You can assess your knowledge of the various parts of angles and lines at this web site. You respond to a series of questions. A running total is visible showing the number of correct responses you have as you work your way through the...
Cuemath
Cuemath: Perpendicular Bisectors
Provides a definition and examples of perpendicular bisectors.