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"abcd is not a parallelogram or it does not have any right angles." ~(P and Q) = ~P or ~Q
A B . . D C . . Parallelogram ABCD.
A quadrilateral is a parallelogram if one pair of opposite sides are equal and parallel Let ABCD be a quadrilateral in which ABCD and AB=CD, where means parallel to. Construct line AC and create triangles ABC and ADC. Now, in triangles ABC and ADC, AB=CD (given) AC = AC (common side) Angle BAC=Angle ACD (corresponding parts of corresponding triangles or CPCTC) Triangle ABC is congruent to triangle CDA by Side Angle Side Angle BCA =Angle DAC by CPCTC And since these are alternate angles, ADBC. Thus in the quadrilateral ABCD, ABCD and ADBC. We conclude ABCD is a parallelogram. var content_characters_counter = '1032';
6
false
In parallelogram ABCD, AC=BD. Is ABCD a rectangle?
If ABCD is a parallelogram, what is the value of x?35
Either diagonal of a parallelogram divides the parallelogram into two triangles of equal areas. Thus area of triangle abd = half that of the parallelogram abcd. The required ratio is 1 / 2.
10
If ABCD is a parallelogram, what is the value of x?2018.5 apex
Yes, it is.
always
always
never
In the given truss bridge parallelogram ABCD and PQRS are congruent if AB 24 feet what is PQ?
isosceles triangle
a and d