A circle with two tangents, two chords and a secant. Prove that red and green are parallel.
Scroll down for a solution to this problem.
Solution

Poem
The new moon
Is coming soon
And will smile on the world
Tonight the new moon will rise
And make for us a big surprise
With it’s big shadow
It takes all our sorrows
The creative energy of the moon
Renews our strength
Shining moon
Sparkling moon
We are waiting
For your light
