Question

find the unknown angles ​

Answer 1

Step-by-step explanation:

here,

a + 130 = 180 ( linear pair)

a = 50°

c = x ( vertically opposite angles)

x+a+b = 180 (angle sum property of triangle)

x = b (opp angles to equal sides)

.'. a+2b = 180('.' x = b)

50 + 2b = 180

2b = 180 - 50

2b = 130

b = 65

therefore,

a = 30

b = 65

c = 65('.' b = x = c = 65)

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