Question

please explain step by step​

Answer 1

let fourth angle is x

51.96+100+140.54+x=360(angle sum property of a quadrilateral)

292.5+x=360

x=360-292.5

x=67.5

hence,fourth angle of quadrilateral is 67.5 degrees.

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Answer 2

Step-by-step explanation:

let the fourth angle be x.

we know,

sum of all sides of the quadrilateral = 360°

then,

→ x + 51.96° + 100° + 140.54 = 360°

→ x + 292.5° = 360°

→ x = 360° - 292.5°

∴ x = 67.5