Question

If the angles of a quadrilateral are (x-20)°, (x+20)° , ( x-15)°and (x+15)° ,find x.

Answer 1

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Answer 2

Answer:

90°

Step-by-step explanation:

the total angle of one frictional shape is 360°

x-20 x+20 x-15 x+15 =360

x-20+x-15 x+20 +x+15 =360

-2x 35 +2x 35 =360

-4x =360

-x =360÷4 = -90

answer 90°