Question

solve this fast

please do it fast I need answer​

Answer 1

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 <ABC = 40° and <ACD = 120°

To find : <A

Solution : As we know that the sum of two angles opposite to the exterior angle in a triangle is always equal.

.i.e. <ABC + <BAC = <ACD

40° + <BAC = 120°

<BAC = 120° - 40°

<BAC = 80°

So 'B' is the correct answer.