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2 years ago

5

I really need help!!!

1 answer:

antiseptic1488 [7]2 years ago

5 0

(a)

A right angle sums to 90

6x + 4x + 10 = 90

10 x = 80

x = 8

(b) straight line = 180

5x + 13 + 3x + 7 = 180

x = 20

(c) Sum of triangle angles = 180

3x + 5 + 2x + 18 + 2x + 17 = 180

x = 20

(d) Sum of two angles in right angle = 90

90 = x + 30

x = 60

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