Which of the following statements is false?
a. a square is a regular quadrilateral.
b. given quadrilateral abcd, bc and ad are adjacent
c. a rectangle is an equiangular quadrilateral.
d. opposite sides of a parallelogram are congruent.

B. Given quadrilateral ABCD, BC⎯⎯⎯⎯⎯⎯⎯⎯ and AD⎯⎯⎯⎯⎯⎯⎯⎯ are adjacent

Step-by-step explanation:

A. A square has 4 congruent sides and 4 congruent angles, so it is a regular polygon. True.

B. Draw the quadrilateral and label the vertices in the order shown. Given quadrilateral ABCD, BC and AD are opposite sides, not adjacent sides. False.

C. All angles of a rectangle are right angles that measure 90 degrees. True.

D. True by a theorem.

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.