Which of the following statements is true? A. segment Ac is a perpendicular bisector
B. the segment BD bisects segment EC
C. the segment BD should be parallel to segment AE
D. the segment DE is perpendicular to segment AC

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Which rectangle if translated 6 units right and 16 units down and the rotated 90° clockwise about the point (4, -11) will result in rectangle e?