# Help: Create angled line point intersecting line, w/known length

I’m stuck with this problem. My Rundschau instructions say: T3_L3 is equal to T2_L2. It should intersect with line G4_A7. I have fudged in the point L3 in the drawing. I have tried many different tools and equations but I could not get a point to show up using any intersect tool. I tried drawing a arc (length T2_L2) to intersect with G4_A7 but could not get a point. Any help or thoughts. TIA

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It sounds like you’re wanting “Intersection Point of Line and Arc (PC)” in the point toolbox. (fourth row down, right column in your picture)

• After selecting the tool a prompt will appear in the lower left on the status bar urging you to select the first point of the line.
• Select G4 (or A7)
• the prompt now informs you to select the second point of the line
• Select A7 (or G4)
• the prompt now instructs you to select the center point of the arc
• Select T3
• A dialog should now be open, asking you what radius to use.
• Insert `Line_T2_L2` as the radius.
• click OK, & the point should be right where you wanted it!

I hope that helps!

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That did it ! Thanks ! Pneumarian I didn’t consider that tool because of the term “Arc” in it’s description. I was looking for a radius. I learned something. Thanks Again ! Cheers !

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Glad that’s what you were needing! I once did a similar thing with trigonometry. You can imagine my feelings when I discovered there was an easier way!

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We’re looking for suggestions to rename our tools. ‘Arc’ is one of the terms that could be improved. Would ‘Circle’ be an improvement? Most people understand how to intersect with a circle. Using the term ‘Arc’ makes it appear to be a separate problem, but it is the same as intersecting with circle.

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In hindsight, it wasn’t so much the description of the tool but more it’s icon. I was looking for an icon more like this:

The current icon made me think of a tangent.

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If you’d like to make suggestions for icon improvement, we’d love to hear about them

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An “arc” IS a circle, or rather a part of one.

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Yes Arcs are circles. In the python prototype, I named these tools IntersectCircles, IntersectCircleLine, IntersectCircleAngle, IntersectCircleTangent, IntersectCircleCurve. The names were changed to “Arc” ( in a unilateral decision that excluded me ) and some of these tools weren’t implemented, like IntersectCircleCurve and IntersectCircleTangent. Some were re-named “Shoulder tool” or “Triangle tool” and the tool dialogs were clunky. Shoulder tool/Triangle tool has been renamed “Intersection Point of Line and Arc”, but I think we can improve even on these

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It sounds like you’re saying that “Point on Shoulder (PS)” & “Triangle (PT)” were renamed to “Intersection Point of Line and Arc (PC)”. So I think I’m confused about something.

Speaking of Triangle (PT), I actually found a need for it over the holidays!

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