[size=150]1) Use the CIRCLE WITH CENTER THROUGH POINT [icon]/images/ggb/toolbar/mode_circle2.png[/icon] tool to construct a circle with center [i]A[/i] that [br] passes through [i]B[/i]. [br][br]2) Select the POINT ON OBJECT [icon]/images/ggb/toolbar/mode_pointonobject.png[/icon] tool. With this tool selected, touch the circle in 2 different spots [br] to plot two different points, [i]C[/i] and [i]D[/i], on the circle itself. [br][br]3) Use the POLYGON [icon]/images/ggb/toolbar/mode_polygon.png[/icon] tool to construct the triangle [i]ACD[/i]. [br] How would you classify this triangle by its sides? Why is this? [/size]
[size=150]4) Select the MOVE [icon]https://www.geogebra.org/images/ggb/toolbar/mode_move.png[/icon] tool. [br][br]5) Use the ANGLE [icon]https://www.geogebra.org/images/ggb/toolbar/mode_angle.png[/icon] tool to find and display the measures of all 3 angles of this triangle. [/size]
[size=150]What do you notice? (Be sure to select the MOVE tool again and move all 4 points around!) [/size][br]