Chapter 3 Review: Introduction to Drawing and Editing – Flashcards
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When you enter a fractional number in AutoCAD, why is a hyphen required between a whole number and its associated fraction?
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To indicate two different values of measurement.
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Briefly describe the Cartesian coordinate system.
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A system that locates points in space according to distances from three intersecting axes.
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Explain how to use the wheel on a mouse to zoom in.
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Change the display area to show a smaller part of the drawing at a higher magnification.
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Explain how to use the wheel on a mouse to zoom out.
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Change the display area to show a larger part of the drawing at a lower magnification.
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Explain how to use the wheel on a mouse to pan.
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Change the drawing display so that different portions of the drawing are visible on-screen.
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List two ways to discontinue drawing a line.
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Press the ENTER key or the space bar.
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What does the absolute coordinate display 5.250,7.875 mean?
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They are the X,Y values of a point measured from 0,0.
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What does the polar coordinate display @2.750<90 mean?
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It means that this point, located relative to the previous point, was draw with a length of 2.75 and at an angle of 90 degrees.
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Name three types of coordinates used for point entry.
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Absolute, Relative, Polar, and Crosshair coordinates.
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How can you turn on the coordinate display field if it is off?
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Located to the left of the status bar, to turn on either, pick the display field or right-click and select ON.
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What two general methods of point entry are available when dynamic input is active?
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Pointer input and Dimensional input.
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Explain how you can continue drawing another line segment from a previously drawn line.
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Move the mouse over the last point and when you see the SPECIFY FIRST POINT: prompt, press [ENTER] or the space bar.
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Name two ways to access the Drafting Settings dialog box.
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Type: DSETTINGS; DS; SE
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How do you activate Snap mode?
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Type: SNAP; [F9]; [Ctrl] + [B]
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How do you set a grid spacing of .25?
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Type values that are multiples of .25 in the Grid Spacing area.
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Explain, in general terms, how direct distance entry works.
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Entering points by dragging the crosshairs to establish direction and typing a number to specify distance.
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What are the default angle increments for polar tracking?
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0, 90, 180, and 270 degrees.
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How can you turn on Ortho mode?
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Pick the Ortho Mode button on the status bar to toggle Ortho mode on and off.
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Which running object snap modes are active by default?
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Endpoint, Center, Intersection, and Extension.
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Name the drawing aids that must be active for object snap tracking to function.
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Running object snaps must be active, and the crosshairs must hover over the intended selection long enough to acquire the point.
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When you access the ERASE command, what replaces the screen crosshairs?
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The Select objects: prompt appears and an object selection target, or pick box replaces the screen crosshairs.
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How many command sequences can you undo at one time with the U command?
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One at a time.
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Name the command used to bring back an object that was previously removed using the UNDO command.
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The REDO command.
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Name the command used to bring back the last object(s) erased before starting another command.
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The OOPS command.
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How does the appearance of window and crossing selection boxes differ?
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Window selection allows you to select objects by creating a box around the objects. Only objects entirely within the window are selected. Crossing selection also requires you to create a box, but all objects within and crossing the box are selected.
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List five ways to select an object to erase.
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Window selection, Crossing selection, automatic windowing, implied windowing, and Fence selection.
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Define stacked objects.
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Objects that overlap in a drawing. When you pick with the mouse, the topmost object is selected by default.
