answersLogoWhite

0

A quadrilateral, in general, is not a parallelogram.

If it is a parallelogram then you will have some additional information about its sides and angles. If you do not have such information it is not possible to prove that it is a parallelogram.

Draw a diagonal which will divide the quadrilateral into two triangles and use the additional information that you have to show that the triangles are congruent. This can then be used to show equality of sides or of angles: the latter can then be used to show that sides are parallel.

Note that the choice of which diagonal may influence how (if at all) you proceed.

User Avatar

Wiki User

13y ago

Still curious? Ask our experts.

Chat with our AI personalities

ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
DevinDevin
I've poured enough drinks to know that people don't always want advice—they just want to talk.
Chat with Devin
TaigaTaiga
Every great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga

Add your answer:

Earn +20 pts
Q: How can you used a triangle to prove quadrilateral is a parallelogram?
Write your answer...
Submit
Still have questions?
magnify glass
imp