Question 5: Obtuse Triangles
Level
2
Triangle ABC exists such that angle B is greater than 90 degrees.
If AB=4, and BC=3, what is the range of values for the perimeter of triangle ABC?
x>12
x<12
x<14
7<x<14
x>7
12<x<14
8<x<14
x>8
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
If angle B=90, A C = 3 2 + 4 2 = 5 .If angle B=180, A C = 3 + 4 = 7 ,so A C is from 5 to 7,and the perimeter is from 12 to 14