Angle at semi-circle is a right angle.
Small Geogebra applet to show that angle at semi-circle is a right angle.
Objective : To establish the relation that angle at semi-circle is a right angle.
Instructions To Use.
1) Move the point A on both semi-circles and observe ∠BAC . It always remains 90° .
2) Move the diameter BC and Observe ∠ BAC. It always remains 90°.
3) Draw a conclusion that angle at semi-circle is a right angle.
By Mahanth Chaudhary
Mathematics Teacher and Trainer