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1.Solve the following sums:
i)Three angles of a quadrilateral are 25° , 136° and 17° . Find the fourth angle.
ii) The angles of a quadrilateral are 4x° , 2x °, x° and 5x° . Find the value of x.
iii) Three angles of a quadrilateral are 2a° , 10a° and 19a°. Find an expression for
the fourth angle.

Respuesta :

relisjoseph

Step-by-step explanation:

i) the fourth angle is x=360-(25+136+17)

x=182

ii) 4x+2x+x+5x=360

12x=360

x=30

iii) an expression for the fourth angle can be 5a

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