#### Answer

right triangle

#### Work Step by Step

Using the Pythagorean Theorem...
$a^{2}+b^{2}=c^{2}$
$2^{2}+(\sqrt 3)^{2}=(\sqrt 7)^{2}$
Simplify...
$4+3=7$
$7=7$
Since the sum of the sides squared $(7)$ is equal to the hypotenuse squared $(7)$, the triangle is a right triangle.