MS Power Point
To maintain the perspective (height and width ratio) of an object when resizing, you need to

Press and hold the shift key while dragging a corner sizing handle & Drag a corner sizing handle
Press and hold the shift key while dragging a corner sizing handle
Press and hold the alt + ctrl keys while dragging a middle handle
Drag a corner sizing handle

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MS Power Point
What's the best way to design the layout for your slides?

For each new slide, select a layout from the Slide Layout task pane
Apply templates from the Slide Design task pane
Create layouts for slides, handouts and notes using the Master Layout dialog box in slide master view
None of above

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