Remember that the angles in a triangle add to 180 degrees. So, to solve, you add the two angles you have and subtract that difference from 180.
Answer:
71
Step-by-step explanation:I think I solve it a weird way but here it is.
70 times 5= 350
65+68+66+80= 279
350-279= 71
Check:
65+68+66+80+71= 350
350/5=70 which means 71 is the correct answer
Answer:
72 degrees
Step-by-step explanation:
Calculate the number of sides in the regular polygon. We do this by dividing 360° by the size of one exterior angle, which is 72°
