Is there a way to measure to the intersection point of that radius?
Add a virtual sharp.
If you're not familiar with virtual sharps, Ctrl select the two edges, then choose Point from the Sketch toolbar. That will place a point at the intersection of the edges, which you can dimension to. There are several different styles of Virtual Sharp points. They're controlled at Tools > Options > Document Properties > Virtual Sharps.
I am not familiar with virtual sharps and i just tried Ctrl select the two edges then selecting the point from sketch bar no point was added?
That should have worked. Go to the settings in Document Properties (see my above post), and make sure "None" isn't selected.
Click on tools/options/document properties/virtual sharp....make sure it's not set to none.
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