Respuesta :

Confes
Circle Circumference = 180°

Answer: D.) x = 28.0

180° - (9° +  12° + 21°)
= 180° - 42°
= 138°
138° ÷ 2 = 69°

28° + 28° = 56°

Then you have a small triangle left of the 180°. So this leaves you with that triangle = 13°

Answer: D.) x = 28.0 

Otras preguntas