Geogebra Activity related with base angles of an isosceles triangle.[br][justify]Instructions: [icon]/images/ggb/toolbar/mode_polygon.png[/icon] Polygon Tool [icon]/images/ggb/toolbar/mode_slider.png[/icon] slider tool. [icon]/images/ggb/toolbar/mode_angle.png[/icon] angle tool [icon]/images/ggb/toolbar/mode_text.png[/icon] text tool[br][icon]/images/ggb/toolbar/mode_segmentfixed.png[/icon] line segment with given length.[icon]/images/ggb/toolbar/mode_move.png[/icon] Move tool.[br]1. Move the slider tool to make the sides dynamic.[br]2. Find the equal sides and base of the isosceles triangle.[br]3. Move the point [color=#ff0000]A[/color] and observe the angles . Observe that the base angles [icon]https://www.geogebra.org/images/ggb/toolbar/mode_angle.png[/icon] are equal or not. [br]4. Move the point [color=#ff0000]B[/color] and observe the angles . Observe that the base angles [icon]https://www.geogebra.org/images/ggb/toolbar/mode_angle.png[/icon] are equal or not. [br]5. Draw the conclusion.[br][color=#ff0000][b][u]Note : Construction protocol in pdf format is also included in this applet.[/u][/b][/color][br][/justify] polygon tool.

By Mahanth Chaudhary[br]Mathematics Teacher and Trainer