What is the measure of each exterior angle of a regular triangle?

Plzzz someone help me

Come up with a new linear function that has a slope that falls in the range 10 m − < < . choose two different initial values. for this new linear function, what happens to the function’s values after many iterations? are the function’s values getting close to a particular number in each case?

Solve the triangle. a = 21°, c = 105°, c = 5

Can someone me and explain..will award brainlest!