Question

Three angles of a quadrilateral are (3x - 10), 2x and (2x + 10) and the fourth angle measures 80°. Find
the measure of the remaining angles of the quadrilateral​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

x = 40

Step-by-step explanation:

(3x - 10)° + 2x + (2x + 10)° +80° = 360°

3x + 2x + 2x = 360° -80°

7x = 280

x= 280/7

x = 40

3x+10= 3X40 - 10 = 110°

2x = 2X40 = 80

2x+10= 2X40 - 10 = 90°