a.
To find what is true about all the drawn quadrilaterals.
a.
Answer to Problem 27WE
The adjacent
Explanation of Solution
Given:
Random quadrilaterals with one pair of parallel sides.
Draw random quadrilaterals with one pair of parallel side.
By observing the quadrilaterals,
In any random quadrilateral with one side paralleltwo pairs of adjacent angles formed between the parallel sides and one of the non-parallel side, add up to 180 degrees.
Conclusion: Therefore, the adjacent angles formed between the parallel sides and one of the non-parallel side are supplementary.
b.
To state and prove the converse of that the adjacent angles formed between the parallel sides and one of the non-parallel side are supplementary.
b.
Explanation of Solution
Given:
A quadrilateral
In quadrilateral
Conclusion:
Therefore,
c.
To write: a biconditional about pairs of opposite angles.
c.
Answer to Problem 27WE
Opposite angles can be equal or supplementary.
Explanation of Solution
Given:
A quadrilateral
Concept used:
In a quadrilateral the opposite angles can be equal like in Rhombus or Square.
And the opposite angles can also be supplementary at the same time like in a Square and Rectangle.
Conclusion:
Therefore, in a quadrilateral the opposite angles can be equal and supplementary at the same time.
Chapter 3 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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- Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage Learning