Tommy is drawing a triangle with angles measuring 41° and 123°, and the included side measures 6 cm. What is the measure of the third angle of the triangle?

For every triangle, it's 3 angles always add up to 180°

let x be the missing angle measure

180=41+123+x

simplify

180=164+x

subtract 164 from each side

16=x

x=16

that means the third angle measure is 16°