Question

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Answer 1

Answer:

12.=> 50 degree

13.=> 119 degree,119 degree

Step-by-step explanation:

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Answer 2

Answer:

12) x + 20 + x + 3 + x + 7 = 180

3x + 30 = 180

3x = 180 - 30

3x = 1 50

x = 150 /3

x = 50

13 ) let <1 and <2 be x

therefore ,

x + x + 58 = 180...... ( measure of triangle is 180)

2x = 180 - 58

2x = 122

x = 122 / 2

x = 61

Therefore measure of <1 and <2 = 61

<3 and <4 are on linear.....

Therefore ,

= 180 - 61

= 119

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