Question

Find x in each of the following figures:-

Answer 1

Answer:

1)5x+2x+8x=180.......sum of angles of triangle

15x=180

x=180/15

x=36/3

x=12

2)90+4x+5x=180.......sum of angles of triangle

9x=180-90

x=90/9

x=10

Step-by-step explanation:

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Answer 2

Answer:

i) x=12

ii) x= 10

Step-by-step explanation:

i) 5x+8x+2x= 180°(sum of all angles of a triangle is 180°)

15x=180°

x=180/15

x= 12

ii) 90°+5x+4x= 180°(sum of all angles of a triangle is 180°)

90°+9x= 180°

9x= 180°-90°

x= 90/9

x=10

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