Question

□ABCD is a parallelogram. If A = 4x and C = 100ᵒ, then find value of x​

Answer 1

$\sf{∠a \: + ∠c \: = 180°}$

$\sf{4x + 100° = 180°(sum \: of \: opposite \: angle \: is \: 180°)}$

$\sf{4x = 180° - 100°}$

$\sf{4x = 80°}$

$\sf{x = 20°}$

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Answer 2

Answer:

Value of x is 25.

Step-by-step explanation:

ABCD is a parallelogram.

Therefore, Angle A = Angle C (Opposite angles in a parallelogram are equal)

4x = 100°

x = 100/4

x = 25

Therefore, value of x is 25.