Question

If the angles of a triangle are represented by x, 3x+20, and 6x , the triangle must be

a. obtuse
b. right
c. acute
d. isosceles

Answer 1

the sum of angles is 180. so, adding all the equations and = 180, solve them and you will get x. find the angles and see if there are any 90 degrees or similar angles.

Answer 2

\[x+3x+20+6x=180, x=16, other \angle=68, other =96.\]
so i guess its a)

Answer 3

yeah since the third angle is greater than 90 so its obtuse ? @P0sitr0n

Answer 4

In a triangle if any angle is greater than 90 it is an obtuse triangle.

Answer 5

yes