Respuesta :

jiminparkarmy4

Answer:

the sum of all angles in triangle is equal to 180°

Step-by-step explanation:

1 = 2 = 3 = 4 = 90° (360° / 4)

9 = 180° - 21° - 90° = 69°

10 = 180° - 59° - 90° = 31°

5 = 59°

6 = 21°

7 = 9 = 69°

8 = 10 = 31°

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