Each side of the square below is 20 centimeters. The area of the circle inside the square is about 314 square centimeters. A circle inside of a square. The circle touches all sides of the square. What is the probability that a point chosen at random in the square is in the shaded region? StartFraction 43 over 200 EndFraction StartFraction 43 over 157 EndFraction StartFraction 157 over 200 EndFraction StartFraction 200 over 157 EndFraction

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.