Name a pair of perpendicular line segments for this! Thanks!

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

The area of square garden is 300m squared. how long is the diagonal?