Midpoint Line
Sketch a line starting symmetrically from its midpoint.
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There are three types of rectangles in the dropdown menu: Corner rectangle, Center point rectangle and Aligned rectangle. Select the Corner rectangle from the sketch toolbar or use the keyboard shortcut G. This rectangle is called a corner rectangle because each click of the mouse defines a corner of the rectangle. Left-click to start the rectangle. Drag the cursor to view the rectangle. Create a rectangle in any direction by moving the cursor in that direction. Left-click again to place the rectangle. The Center point rectangle is defined by its center point. To create a Center point rectangle, select it from the sketch toolbar. Left-click to place the center of the rectangle. Drag the cursor in any direction and then left-click to place the length and width of the rectangle. Both the Corner rectangle and Center point rectangle align their sides vertical and horizontal to the X-Y axes of the sketch plane.
The aligned rectangle allows for the creation of a rectangle at an angle, where the sides of the rectangle are not horizontal or vertical with respect to the sketch plane axes. To create an aligned rectangle, three clicks define the rectangle’s corners. Select Aligned rectangle in the Sketch toolbar. Left-click to define the first endpoint of the rectangle. Move the cursor away to define the angle of the first side of the rectangle, left-click to place the second endpoint of the first side. Drag the cursor out to define the perpendicular distance of the second rectangle side. Left-click to place the width of the rectangle.
Steps
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Click the dropdown next to the Line tool and select the Midpoint line tool icon
to activate the tool.
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Hover over the sketch on which you want to create a midpoint line.
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Click to place the mid point of the line.
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Click again to place the end point of the line.
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iOS and Android support for Midpoint line is limited to viewing and editing Midpoint lines inserted from the desktop (browser) platform.