Which biconditional is not a good definition? a. two line segments are congruent if and only if they are of same length. b. an angle is straight if and only if its measure is 180. c. two figures are congruent if and only if their areas are equal. d. a whole number is odd if and only if the number is not divisible by 2.

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft