Answer:
180
Step-by-step explanation:
If you add 60 +60 + 60, or 60 + 50 + 70, both would add up to 180, since x = 60. This is why both triangles, have a complete of 180.
A triangle has 3 sides in every triangle all the three sides should sum up to 180°.
In the 1st figure,
70+50+x=180 (being sum of triangle)
now 120+x=180
x=180-120
=60
In the 2nd figure
x is 60
60+60+60=180,
Thus explained
