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Triangle Geometry	Acute (Geometry)	Java Applet	Activity	[1]
This eModule presents real-world problems that motivate students to work with triangle geometry. Interactive worksheets and diagrams with feedback help students learn to solve for unknown angles and s... More: lessons, discussions, ratings, reviews,...
Triangle Geometry	Acute (Geometry)	Java Applet	Lesson Plan	[1]
This eModule presents real-world problems that motivate students to work with triangle geometry. Interactive worksheets and diagrams with feedback help students learn to solve for unknown angles and s... More: lessons, discussions, ratings, reviews,...
Euclid's Elements, Book I, Def...	Acute (Geometry)	Java Applet	Tool	[0]
Gives Euclid's original definitions of an equilateral, isosceles, scalene, right-angled, obtuse-angled, and acute-angled triangle and then examines the definitions' validity and durability. To reset t... More: lessons, discussions, ratings, reviews,...
Euclid's Elements, Book II, Pr...	Acute (Geometry)	Java Applet	Tool	[0]
Euclid's proposition states properties about the sides and angles of acute triangles. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is ove... More: lessons, discussions, ratings, reviews,...
Triangle Classification	Acute (Geometry)	Java Applet	Tool	[0]
An interactive Java Illustration for classification of triangles. The types displayed are scalene, acute, obtuse, right, isosceles, and equilateral. More: lessons, discussions, ratings, reviews,...
Triangle Classification Game	Acute (Geometry)	Java Applet	Tool	[1]
In this activity the interactivity attempts to train the user in the classification of triangles with respect to sides and internal angles. The user should move the vertices of a triangle on a square ... More: lessons, discussions, ratings, reviews,...
Types of Triangles (Acute, Obt...	Acute (Geometry)	Java Applet	Tool	[0]
An interactive applet and associated web page that demonstrate the three types of triangle: acute, obtuse and right. The applet shows a triangle that is initially acute (all angles less t... More: lessons, discussions, ratings, reviews,...
Triangles	Acute (Geometry)	JavaScript	Tool	[0]
The user reviews different classifications of triangles by their sides and angles. After viewing examples, users can interactively practice matching different triangles with their correct classificat... More: lessons, discussions, ratings, reviews,...
A "Possibly New Theorem"	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
This guided exploration, using Geometer's Sketchpad, leads students to notice what John Conway saw in this triangle construction. More: lessons, discussions, ratings, reviews,...
A Continuation of Minimum Peri...	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
A further guided exploration of triangles inscribed within triangles, using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
A Triangle Center	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
In this guided exploration, students use Geometer's Sketchpad to discover a characteristic of one of the special triangle centers. More: lessons, discussions, ratings, reviews,...
Angle Bisectors in a Triangle	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
A guided exploration of the angle bisectors of a triangle, and the point at which they intersect, using Geometer's Sketchpad. 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,...
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,...
Geometry Quickies #1	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
The activity based around medians in this series may generate some questions. Here is a further exploration of the topics it raised, again with reference to Geometer's Sketchpad. 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,...
Medians in a Triangle	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
A guided exploration of medians in a triangle using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
The Centroid of a Triangle	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
An exploration using Geometer's Sketchpad of the centroid of a triangle, and the way it divides the larger triangle. More: lessons, discussions, ratings, reviews,...
Two Minimum Length Problems an...	Centers of triangles (Geometry)	Sketchpad	Activity	[0]
A guided exploration of minimum distances from vertices of a triangle or quadrilateral to a point within the figure, using Geometer's Sketchpad. 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,...
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