the sum of three consecutive even integers is less than 75. what are the greatest possible values of these integers? please help asap

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'