Respuesta :

S1NGH

Answer:

x = 40

Step-by-step explanation:

→ Add all the angles together

3x + 2x + 5 + 2x + 10 + 2x - 15 ⇒ 9x

→ Make the equation equal to 360°

9x = 360°

→ Divide both sides by 9

x = 40

Answer:

x=40

Step-by-step explanation:

Sum of angle measure- 360°

Therefore all 4 four of them should be equal to 360-

2x+5+3x+2x+10+2x-15=360

Simplify the equation-

9x=360

Make x by itself-

x=360÷9

x=40

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