Answer:
it turns out google has the answer
Step-by-step explanation:
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Adjacent and supplementary- the 2 angles are next to each other and they form 180 degrees
Answer:


Step-by-step explanation:
A parallelogram is a quadrilateral (4-sided polygon) that has two pairs of parallel sides.
In this sense, this figure shows a especial parallelogram called <u>rectangle</u>, since its four sides form right angles (
).
Hence:






So, the correct choices among the given options are:


Answer:
principal square root
Step-by-step explanation:
Let
.
Then 
We have a negative square root for x, which is
and a nonnegative square root,which is 
The nonnegative square root is callled the principal square root .
Therefore the best complete to the statement;
A -------- is the nonnegative Square root of a number, is principal square root.