If the shape is the same, but the size is different, <em>dilation is involved</em>. There may be other transformations that are also involved (such as rotation, translation, or reflection), so MNPQ may or may not be a straight dilation of M'N'P'Q'.
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Translation and dilation can sometimes be combined to a dilation about a point that is not the origin. Reflection might be accommodated by using a negative dilation factor. However, rotation cannot be accomplished using dilation alone.
Step-by-step explanation:
w×3+1
3w+1=4
3w=4-1
3w=3
w=1
Both angles add up to 180.
180-100=80
The missing angle is 80°.
