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The task in the image is to construct the traces of a given plane \( ABC \). Here’s a basic guideline on how to approach this: 1. **Identify Points and Lines**: - Identify points \( A, B, \) and \( C \) which define the plane. - Determine the lines \( a1c1c2a2 \) and \( b1b2 \). 2. **Determine Horizontal and Vertical Traces**: - The horizontal trace is where the plane intersects the horizontal plane (XZ-plane), often extended from points \( a1, b1, c1 \). - The vertical trace is where the plane intersects the vertical plane (YZ-plane), often extended from points \( a2, b2, c2 \). 3. **Extend Lines to Meet Axes**: - Extend the lines to intersect with the horizontal (X) and vertical (Y) lines to locate the traces. 4. **Verify Intersections**: - Check that the lines and points are correctly extended and meet the axes at suitable locations indicating intersection points. 5. **Label and Draw**: - Clearly label the intersections and draw the traces on the axes. This will give you the traces of the plane \( ABC \) in the specified space.