Source Texts
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Clockwise from top left, the lines are labeled , , and .
Line intersects both line and line .
At the intersection of line and line , angle is labeled clockwise from top left as follows:
Top right:
At the intersection of line and line , angle is labeled clockwise from top left as follows:
Top left:
A note indicates the figure is not drawn to scale.
Line intersects both line and line .
At the intersection of line and line , angle is labeled clockwise from top left as follows:
Top right:
At the intersection of line and line , angle is labeled clockwise from top left as follows:
Top left:
A note indicates the figure is not drawn to scale.