[size=200][b]Draw a triangle inscribed in a semicircle[/b][/size][br][br][color=#000000]Draw a triangle inscribed in a semicircleAll the triangles inscribed in a semicircle are rectangles if the hypotenuse coincides with the diameter.[/color][br][br][color=#9900ff]1st. Activate the "Semicircle through 2 points" tool [icon]/images/ggb/toolbar/mode_semicircle.png[/icon].[/color][br][br][color=#9900ff]2nd. Click on two different points in the Graphics View and you will obtain a semicircle between points "A" and "B".[/color][br][br][color=#9900ff]3rd. Activate the "Move" tool [icon]/images/ggb/toolbar/mode_move.png[/icon]and name the semicircle "s".[/color][br][br][color=#9900ff]4th. Activate the "Point" tool [icon]/images/ggb/toolbar/mode_point.png[/icon] and click on semicircle "s".[/color][br][br][color=#9900ff]5th. Activate the "Polygon" tool [icon]/images/ggb/toolbar/mode_polygon.png[/icon] and click on the three points "A", "B", "C" and then again on "A" to build an inscribed triangle.[/color][br][br][color=#9900ff]6th. Activate the "Move" tool [icon]/images/ggb/toolbar/mode_move.png[/icon] and name "TR" the triangle.[/color][br][br][color=#9900ff]7th. Activate the "Angle" tool[icon]/images/ggb/toolbar/mode_angle.png[/icon] and click the points "A", "C" and "B". If the angle is different from 90 degrees rectify by erasing the angle first.[/color][br][br][color=#9900ff]8th. Activate the "Move" tool[icon]/images/ggb/toolbar/mode_move.png[/icon] and animate point "C".[/color][br][br][color=#000000]The two curved arrows located in the upper right corner of the Graphics View allow you to reset the activity.[/color][br][br][color=#000000]If the activity is correct, you will get 10 points automatically.[/color]