Posted by **DANIELLE** on Sunday, March 4, 2007 at 8:10pm.

Given quadrilateral ABCD,ABllDC, diagonal AC.

we can prove that angle 1= angle 2, but cannot prove angle 3=angle4 Why is this. What must be true about the sides of the Quadrilateral in order to prove that angle 3 is congruent to angle 4?

My answer:

The sides of the quadrilateral must be parellel and that the coresponding angles are congruent to each other. Am I on the right path here? Help pleeeeeeese!

Thanks much

- Geometry -
**akash**, Friday, February 8, 2013 at 6:04am
Ab||cd

i.e. They are similar so u can fk them

- Geometry -
**maRY**, Friday, April 19, 2013 at 1:14pm
What is an equiangular triangle?

A. a triangle in which all interior angles have equal measure

B. a triangle in which only two interior angles have equal measure

C. a triangle in which no interior angles have equal measure

D. none of the above

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