You can resize any object. Only shapes, text boxes, and images can be rotated or flipped.
Tap an object, then drag any of its blue selection handles.
You can quickly match the sizes of two objects on the sheet.
Select the object you want to resize, then drag a selection handle to begin resizing.
As you drag, touch and hold another object of the desired size.
When the words Match Size appear, lift both your fingers at the same time.
Tap the object, place two fingers on it, then turn your hand in the direction you want to rotate the object.
After you start the rotation, you can continue by dragging with a single finger. A guide appears to indicate the angle of rotation.
Tap an image, then tap 
.
Tap Arrange, then tap Flip Vertically or Flip Horizontally.