Question

The figure below shows a partially completed construction of triangle LMN.
http://oi48.tinypic.com/30jofao.jpg
Which statement is true?

Two angles in the triangle are congruent because the lengths of LN and LM are the same as the radius of the circle on which they lie.


Two angles in the triangle are congruent because the third angle measures 90˚.

One angle is obtuse because M lies on the perpendicular line.

The length of segment LN and the length of segment LM is the same because both are perpendicular to each other.