Answer:
True
Step-by-step explanation:
Brainliest?
Answer:
100°
Step-by-step explanation:
two angles are supplement .
if their sum is equal to 180°
supplement angle of 80° + x = 180°
180° - 80° = 100° answer
If I'm not wrong I believe it would be 343 different ways.
The surface area is ≈ 451.92