Answer:




Step-by-step explanation:
Given:

bisects angle BAC

Triangle ABC is isosceles triangle, because
Angles adjacent to the base of isosceles triangle ABC are congruent.
Hence,

The sum of the measures of all interior angles is 180°, so,

Since
bisects angle BAC, angles BAD and CAD are congruent by definition of angle bisector. So,

AD ia angle bisector in isosceles triangle drawn to the base, so it is the height. Thus, AD and BC are perpendicular. So,

The midpoint would be (5,9)
Joni's calculation is the most accurate. Hope my answer helped u :)
Answer:
4
Step-by-step explanation:
Natural numbers are any whole number that is not zero (0). You could literally pick 1, 2, 3, 4, 5, 6, 7, 8, or 9, but I chose 4.