1.

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Answer:

6. Since l is parallel to m,so the mentioned two ANGLES are co-interior angles.

.i.e. 4X + (3x + 5 ) = 180°

7x + 5 = 180°

7x = 180° - 5°

7x = 175°

x = 175°/7

x = 25°

Option 'D' is the correct answer.

7. Given : ∆ABC, side DC is produced to D.If

To find :

Solution : As we KNOW that the sum of two angles opposite to the exterior ANGLE in a TRIANGLE is always equal.

.i.e.

40° +

So 'B' is the correct answer.


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