Answer:
100 degrees
Step-by-step explanation:
angles in a quadrilateral (4-sided shape) sum to 360 degrees
so add all the angles up together (80+75+105=260)
and then subtract it from 360 (so it's 100)
Answer:
100 degrees
Step-by-step explanation:
sum of all interior angles of a quadrilateral =360 degrees
80 + 75+ 105=260
360-260=100 degrees
