Given ΔMNO, find the measure of ∠LMN.

38°
52°
76°
104°

104 degrees

Step-by-step explanation:

Since this is an isosceles triangle, two of the angles are congruent.

Angle NOP = 104 degrees

Angle NOP is congruent to angle LMN

Angle LMN = 104 degrees

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

astronomers is your final answer! : )