Respuesta :
40+10=50
180-50=130
10+20=30
180-30=15
angle at center add up to 360
360-(130+150)=80°
The triangle is an equilateral.
180-80=100
both base angles are 50°
40+10=50
180-50=130
10+20=30
180-30=15
angle at center add up to 360
360-(130+150)=80°
The triangle is an equilateral.
180-80=100
both base angles are 50°