Friday

October 24, 2014

October 24, 2014

Posted by **lacey** on Thursday, January 12, 2012 at 10:13pm.

2. A triangle has side lengths of 3, 4, and 7. what kind of triangke is it?

- geometry -
**Steve**, Friday, January 13, 2012 at 10:55amtake the two smaller sides, call them a and b. call the longest side c.

if a^2 + b2 = c^2 you have a right triangle

if < c^2 it's acute

if > c^2 it's obtuse

in addition, if you can find a,b,c such that

a=b=c it's equilateral

a=b≠c it's isosceles

a≠b≠c it's scalene

plug in your numbers and make your choice.

**Answer this Question**

**Related Questions**

Math - If all of the following triangles have the same perimeter, which has the ...

geometry - An angle bisector of a triangle divides the opposite side of the ...

maths - 1.how many non congruent right triangles with positive integer leg ...

Geometry - In a triangle with integer side lengths, one side is three times as ...

Geometry - A triangle has side lengths 3in, 4in, and 6in. The longest side of a ...

geometry - the sides of a triangle have lengths 4x+1, 2x+1 and 6x-1. if the ...

geometry - A triangle has side lengths of 3in, 4in, and 6in. The longest side of...

IRSC - the sum of the lengths of any two sides of a triangle must be greater ...

Geometry - An equilateral triangle has side lengths of 10. If the consecutive ...

Geometry - find the lengths of the sides of a triangle whose perimeter is 37. ...