Triangle ABC is an equilateral triangle. ADis perpendicular to BC.
AB=20 cm
AD bisects both angle BAC and side BC.
Find:
a. AD
b. BD
c. DC

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Through non-collinear points there is exactly one plane.

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6