pythapf.gsp

Form 3 Mathematics

Congruent triangles

This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright & copy ; 1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).

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SSS

Try to connect the points labelled B in the broken triangles. Can you make triangles that aren't congruent?

What can you say about triangles whose corresponding three sides are congruent?

 Press "r" to reset the sketch. 		Sorry, this page requires a Java-compatible web browser.


ASA

Try to connect the points labelled C in the broken triangles. Can you make triangles that aren't congruent?

 Press "r" to reset the sketch. 		Sorry, this page requires a Java-compatible web browser.


SAS

Try to connect the points labelled B in the broken triangles. Can you make two triangles that aren't congruent?

 Press "r" to reset the sketch. 		Sorry, this page requires a Java-compatible web browser.


AAS

Try to connect the points labelled C in the broken triangles. Can you make triangles that aren't congruent?

Press "r" to reset the sketch. 		Sorry, this page requires a Java-compatible web browser.


SSA

How many triangles can be formed given two sides and the angle not between them?

Try to connect the points labelled B in the broken triangles. Can you create two non-congruent triangles?

 Press "r" to reset the sketch.

Further investigation on SSA

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AAA

How many triangles can be formed given three angles?

Drag points A and B in the triangle. Does the triangle maintain its shape and size?

(Angles A and B determine angle C)

 Press "r" to reset the sketch. 		Sorry, this page requires a Java-compatible web browser.


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