The object gets rotated

If you hold down the shift key while dragging the corner , the object gets rotated at an interval of 15degrees
The steps to rotate an object by 90degrees to the left are:
1.Select the object that you want to by 90degrees to the left
2.Select the Rotate or Flip potion from  the Draw menu on the Drawing toolbar
3.Select the Rotate Left option from the Rotate or Flip menu
The object gets rotted by 90 degrees to the left :
The steps to rotate an object by 90degrees to the  right:
1.Select the object that yogi want to rotate by 90degrees tithe right
2. Select the Rotate or flip option from the Draw menu on the Drawing toolbar
3.Select the Rotate Right option from the Rotate or Flip menu
The object gets rotated by 90degrees to the right .
Working With Clipart
Adding a picture From the ClipArt Galley
PowerPoint provides various types of pictures, sounds,  photographs and video clops in its Clipart gallery. You can use the Clipart gallery to insert any of these: The steps to insert any Clipart object are:  
1.     Click on the Insert ClipArt button on the Drawing toolbar The Insert ClipArt dialog box is displayed (refer Figure..9)
2.     Select the Pictures tab
  1. Click on the category from which you want to insert pictures various clops are displayed.
  2. Select the picture you want to insert A callout appears which displays various buttons as shown in Figure 2.10.
·        Insert clip – to insert the clip in the currently displayed slide.
  • Preview clip – to see the image of the clip.
  • Add clip to Favorites of other category- to add the clip to another category or your favorites folder.
  • Find similar clips – to find the clips depicting the same theme.
  • Click on the Insert clip button and close the dialog box The picture gets inserted in the slide.
Scaling and Sizing a ClipArt Picture
You Can resize any object including the ClipArt picture. The steps to resize the picture are:
1.     Select the ClipArt picture
The picture toolbar is displayed (refer Figure 3.11)
2.     Click on the Format Picture button on the Picture toolbar The Format Picture dialog box is displayed.
  1. Click on the size tab (refer Figure3.12)
You can change the height and width of the picture using the Height and Widest spin buttons in the Size and rotate section. Similarly, you can change the sealing factor using the Height and Width spin buttons in the Scale section. If The Lock aspect ratio option is selected, the picture is resized in original proportion. Uncheck this option if you want to resize the height and width irrespective of each other.
4.     Click
The picture gets resized according to the settings.