120˚ 60˚ 100˚ not enough information i'm kind of confused because there is no numbers with it , but i have a feeling it would be 60 degrees

Since this is an equilateral triangle that means all the angles must be congruent
and since all the angles in a triangle add up to 180 degrees each interior angle would be 60 degrees
so.. 60 + y is equal to 180 since the two angles are supplementary
y=120

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c