Question

please tell me this solution​

Answer 1

Answer:

5) 100+x=180

x=80 degree

6) 2x+3x+130=180

5x=50

x=10

2x=20 degree

3x=30 degree

Answer 2

5. let the opposite interior angles be x degrees

As they are equal, sum of them= (x×2) = 2x degrees

Therefore,

2x= 100( in a triangle, sum of opp int angles = ext angle)

x= 100/2 = 50 degrees(Ans)

6. Let the common factor in the ratio be x,

so, one of the opp int angle = 2x degrees

another opp int angle = 3x degrees

Therefore,

2x+3x= 130( in a triangle, sum of opp int angles = ext angle)

5x= 130

x= 26

Two int angles are (2×26) degrees and (3×26) degrees

= 52 degrees and 78 degrees (ans)

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