Question

141. Assertion (A): If the 4 angles of a quadrilateral are
*°, (x +10)°(x +20)°, (x+30)°, then the value of x = 75°
Reason (R): Sum of the four angles of a quadrilateral is 180°
Now choose the CORRECT answer.
(1) Both (A) and (R) are true and (R) supports (A).
(2) Both (A) and (R) are true but (R) doesn't support (A).
(3) (A) is true but (R) is false.
(4) (A) is false but (R) is true.​

Answer 1

Step-by-step explanation:

A is true but R is false

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