Respuesta :
Answer: 80
Step-by-step explanation:
Triangles equal 180 degree angle. 20 minus 180 is 160. 160 divides by 2 is 80. There are three sides to a triangle.
Answer: 80
Step-by-step explanation:
Triangles equal 180 degree angle. 20 minus 180 is 160. 160 divides by 2 is 80. There are three sides to a triangle.