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Exploring Centers of a Triangl...	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
Using problem solving skills, formal geometry, and The Geometer's Sketchpad, students will model and solve a real-world problem by constructing the centroid of a triangle. Students will explore... More: lessons, discussions, ratings, reviews,...
Exploring Centers of a Triangl...	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
Using problem solving skills, formal geometry, and The Geometer's Sketchpad, students will model and solve two real-world problems by constructing the incenter and circumcenter of triangles. St... More: lessons, discussions, ratings, reviews,...
Medians in a Triangle	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
Students discover various properties of the three medians of a triangle. The link to the activity itself is to a zip file that contains a pdf file of the activity. This is a free sample a... More: lessons, discussions, ratings, reviews,...
The Centroid of a Triangle	Centers of triangles (Geometry)	Computer	Lesson Plan	[0]
This lesson provides directions for teaching about the centroid of a triangle using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
Medians of a Triangle	Centers of triangles (Geometry)	Computer	Support Material	[0]
The definition and an illustration of the medians of a triangle. From Illuminations' IGD: Interactive Geometry Dictionary. More: lessons, discussions, ratings, reviews,...
Euler line - Math Open Referen...	Centers of triangles (Geometry)	Computer	Tool	[0]
An interactive applet and associated web page that describe the Euler line. It shows a triangle whose vertices can be dragged. As you drag them, the centroid, circumcenter and orthocenter mov... More: lessons, discussions, ratings, reviews,...
Center of a Regular Polygon - ...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that the definition of the center of a regular polygon. The applet presents a regular polygon, where the user can drag any vertex to resize it, an... More: lessons, discussions, ratings, reviews,...
Centers of Triangles	Centers of triangles (Geometry)	Java Applet	Tool	[1]
See the different centers of a triangle and how they are related to the medians, perpendicular bisectors, and altitudes of the triangle. Students can manipulate the triangle and try to answer the fol... More: lessons, discussions, ratings, reviews,...
Circumcircle of a Triangle - M...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that demonstrate the properties of the circumcircle of a triangle. The applet shows a triangle where the user can drag the vertices to reshap... More: lessons, discussions, ratings, reviews,...
Construct the Circumcircle of ...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that provide step-by-step instructions on how to find the circumcircle of a triangle using only a compass and straightedge. The method used involves... More: lessons, discussions, ratings, reviews,...
Constructing Incenter and Inci...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that demonstrate how to construct the incircle of triangle using compass and straightedge. It starts with a given triangle, and using animation tha... More: lessons, discussions, ratings, reviews,...
Constructing the circumcenter ...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that provide step-by-step animated instructions on how to construct the circumcenter of a triangle. The animation can be run either co... More: lessons, discussions, ratings, reviews,...
Constructing the incenter of a...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that provide step-by-step animated instructions on how to construct the incenter of a triangle. The animation can be run either contin... More: lessons, discussions, ratings, reviews,...
Constructing the orthocenter o...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that provide step-by-step instructions on how to construct the orthocenter of a triangle using only a compass and straightedge. The method used invo... More: lessons, discussions, ratings, reviews,...
Euclid's Elements, Book 4, Pro...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
Euclid's proposition shows how to inscribe a circle within a given triangle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over th... More: lessons, discussions, ratings, reviews,...
Euclid's Elements, Book 4, Pro...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
Euclid's proposition shows how to circumscribe a circle about a given triangle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over... More: lessons, discussions, ratings, reviews,...
Euler Line	Centers of triangles (Geometry)	Java Applet	Tool	[0]
Use this applet to find out how to construct the Euler line. Part of Illuminations' IGD: Interactive Geometry Dictionary. More: lessons, discussions, ratings, reviews,...
Eyeballing Game	Centers of triangles (Geometry)	Java Applet	Tool	[0]
The user is given 7 tasks. Each involves using estimation to achieve a geometric task. Two samples are: moving a ray so that it is an angle bisector, and moving a vertex of a quadrilateral so that it ... More: lessons, discussions, ratings, reviews,...
Orthocenter of a triangle. Mat...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
A web page and interactive applet demonstrating the concept of the orthocenter of a triangle. The applet shows a triangle where the user can drag the vertices around. The orthocenter and... More: lessons, discussions, ratings, reviews,...
Simson Line of a Triangle	Centers of triangles (Geometry)	Java Applet	Tool	[1]
Use this applet to discover how to construct the Simson line of a triangle. More: lessons, discussions, ratings, reviews,...
The Altitude Theorem for Equil...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
Intrigue students with a surprising property of equilateral triangles, stimulate their curiosity to wonder why the property is true, then lead them to understand how the property can be proven in an u... More: lessons, discussions, ratings, reviews,...
The Incenter of a Triangle - M...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
A web page and interactive applet demonstrating the concept of the incenter of a triangle. The applet shows a triangle where the user can drag the vertices around. The incenter and the a... More: lessons, discussions, ratings, reviews,...
Triangle Circumcenter - Math O...	Centers of triangles (Geometry)	Java Applet	Tool	[0]
The applet shows a triangle which the user can resize by dragging any of its vertices. It shows the three perpendicular bisectors of the sides and the point where they intersect - the circumc... More: lessons, discussions, ratings, reviews,...
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