Look at the parallelogram below and calculate the size of angle .
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Look at the parallelogram below and calculate the size of angle .
Since we are dealing with a parallelogram, there are 2 pairs of parallel lines.
As a result, we know that angle ADB and angle DBC are alternate angles between parallel lines and therefore both are equal to each other (44 degrees):
Now we can calculate angle ABC as follows:
Finally, let's substitute in our values:
84
If one of two corresponding angles is a right angle, then the other angle will also be a right angle.
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