Question

find the value of x fast​

Answer 1

Answer:

Triangle = 180°

Angle ABC = right angle

hence, angle ABC = 90°

let the point beside 120° be y

so, y = 180-120 (reason = linear pair)

point C = 180 - 80 - 90

point C = 10°

hence, x = 10° (reason = alternate interior angles)

Step-by-step explanation:

Answer 2

Answer:

20°

Step-by-step explanation:

∠BAC = 2x (Alternate Interior Angle)

In Δ ABO,

∠AOB = ∠ABO = 3x+10 [Angle Opposite to equal sides in a Δ are equal)

=> (3x+10°) + (3x+10°) + (2x) = 180° [Angle Sum Property)

=> 8x + 20° = 180°

∴ x = 20°