Question

Help me solve this problem

Answer 1

Step-by-step explanation:

20.

2x + 2x + X = 180°

=> 5x = 180°

=> x = 180/5

=> x = 34°

21.

7x + 3x + 90° = 180°

=> 10x = 180-90

=> x = 90/10

=> x = 9

22.

x + x + 2x = 180°

=> 4x = 180°

=> x = 45°

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Answer 2

Answer:

20. 2x =2x = 72

x = 36

21. 7x = 7x9 = 63degree

3x = 3x9 = 27degree

22. x=x=45degree

2x = 90degree