maddie is reading a book with 300 pages. she has read 126 pages so far. how many pages does Maddie have left to read
2 answers:
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The internal angle sum of a quadrilateral is :
C. 360°
The sum of internal angles of a polygon is determined by a formula :
where n represents number of sides.
In a quadrilateral there are four sides,
So, plugging 4 in the formula :
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