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Double Angle Proof Without Words
Move point E around to change angle theta.
Question 1
Why does
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
Question 2
Why is
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
Question 3
Why does
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
Question 4
Why does
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
Question 5
In question 3 you explained why
. Why is is also true that
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
Question 6
Explain why is
?
Font size
Font size
Very small
Small
Normal
Big
Very 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
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Information: Double Angle Proof Without Words