Angle in a semi-circle rule:

What do you notice about ABC when you move the points A and B
Font sizeFont size
Very smallSmallNormalBigVery big
Bold [ctrl+b]
Italic [ctrl+i]
Underline [ctrl+u]
Strike
Superscript
Subscript
Font color
Auto
Justify
Align left
Align right
Align center
• Unordered list
1. Ordered list
Link [ctrl+shift+2]
Quote [ctrl+shift+3]
[code]Code [ctrl+shift+4]
Insert table
Remove Format
Insert image [ctrl+shift+1]
Insert icons of GeoGebra tools
[bbcode]
Text tools
Insert Math
Angle in a semi-circle: The angle in a semi-circle is always 90
Have a go at looking at some other interesting features
Close
– GreenMaths, Cameron Ualesi

Information: Angle in a semi-circle rule: