Question

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Answer 1

Answer:

Step-by-step explanation:

The value of x is 20 degrees

Answer 2

Answer:

15) (a) an isosceles triangle

16) (a) 20

Step-by-step explanation:

15) So if two angles are equal then we can say the opposite sides of that angles area equal so

2 sides are equal then it is a isosceles triangle.

so option (a) an isosceles triangle

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16) In this question PQ is a Straight line

So we know angle os straight line is 180

∴ 40 + 4x +3x = 180

  40 + 7x = 180

  7x = 180-40

  7x = 140

   x = 140/7

  x = 20

So option (a) 20