In the diagram below, cd is the perpendicular bisector of ab. if the length of ac is 13, what is the length of bc?

  BC = 13

Step-by-step explanation:

Triangle ACB is isosceles, so AC = BC = 13.

The altitude is the perpendicular bisector of the base if and only if the triangle is isosceles. You can prove this, if necessary, by considering common side CD, corresponding angles CDA and CDB, and marked congruent sides DA and DB. These together make triangle CDA congruent to triangle CDB by the SAS postulate. Then CA is congruent to CB by CPCTC.

the answer is vanilla

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.