angle pairs (more)

Which of the following can be found?

[math]q+s[/math] [math]r-q[/math] [math]r+s[/math] [math]s-p[/math] [math]p+q[/math] [math]p+r[/math]

If you drag the point D, which of the following sums will be changed?

[math]q+s[/math] [math]r-q[/math] [math]p+q[/math] [math]r+s[/math] [math]p+r[/math] [math]s-p[/math]

If you drag the point A, which of the following sums will be changed?

[math]p+r[/math] [math]q+s[/math] [math]p+q[/math] [math]s-p[/math] [math]r+s[/math] [math]r-q[/math]

Информация: angle pairs (more)