All triangles have some combination of right, acute, or obtuse angles.
Study this site and decide which kind of triangle this is.
http://www.mathsisfun.com/triangle.html
If the length of one side of a triangle
Is 2x - 1 units and the perimeter is 18
What is x?
The equation isn't placed anywhere
On the triangle and the triangle is just
A regular one. It is not obtuse or acute
2 answers
im assuming youre talking about an equilateral triangle.
the perimeter is A+b+C=18
and one side is 2x-1 so
so 2x-1+2x-1+2x-1=18
combine like terms
6x-3=18
so 21/6=x
x=3.5
the perimeter is A+b+C=18
and one side is 2x-1 so
so 2x-1+2x-1+2x-1=18
combine like terms
6x-3=18
so 21/6=x
x=3.5