Respuesta :

elishamishra

Answer:

18° lol it's too easy

Step-by-step explanation:

180-(90+72)

=180-162

=18°

efrata74

Answer:

18 Degree

Step-by-step explanation:

all triangles the inside angle sum is 180 degree

so

72+90+x=180

162+x = 180

x= 180-162

  • x=18 degree