Question

Find the value of x. (it's urgent)

Answer 1

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Answer 2

Answer:

i) In parallelogram,

Sum of angles in the same side= 180°

5x +7x = 180°

12x = 180°

Therefore, x= 15

j) In parallelogram,

Opposite angles are equal

Therefore, the third angle in ΔADC = 4x

So, Sum of all angles in ΔADC= 180°

2x + 3x + 4x = 180°

9x = 180°

x = 30°

k) In Δ ABC ---

Sum of all angles in a triangle =180°

50° + 70° + x = 180°

120° + x = 180°

x = 180° - 120°

x = 60°

l) In ΔABC --

Sum of all angles ina triangle = 180°

80° + 6x + 4x = 180°

80° + 10x = 180°

10x = 180° - 80°

10x = 100°

x = 10°