It's in the title.
How do you measure angles and line segments?
How to measure angles and line segments
Re: How to measure angles and line segments

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There's an extension: Extensions menu > Visualize Path > Measure Path, which will measure a path. I'm sorry, I don't know about measuring angles. But maybe someone else will

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Re: How to measure angles and line segments
Workaround:
You need a simple calculator for this.
1
Draw the line with an angle.
2
Make sure "Snap to cusp node" si activated.
3
Put a guideline in parallell with both line segments. Tips: you can adjust it's angle by holding Shift button down while adjust with mouse.
4
Double click on each guideline to get it's absolute angle. Then use a calculator and calculate the difference in angle.
Alternative way: If you have given absolute coordinates, then Geogebra is a good tool to measure angles.
You need a simple calculator for this.
1
Draw the line with an angle.
2
Make sure "Snap to cusp node" si activated.
3
Put a guideline in parallell with both line segments. Tips: you can adjust it's angle by holding Shift button down while adjust with mouse.
4
Double click on each guideline to get it's absolute angle. Then use a calculator and calculate the difference in angle.
Alternative way: If you have given absolute coordinates, then Geogebra is a good tool to measure angles.
