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Give reason why n2=x

Give Reason Why N2x class=

Sagot :

sqdancefan

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Answer:

  1. P₂ and x are both supplementary to N₁
  2. Q₁
  3. R = 90° -x
  4. ΔSMP ≅ ΔSMR ∴ PS ≅ SR

Step-by-step explanation:

1. Angles P₂ and N₁ are opposite angles of inscribed quadrilateral PMNQ, so are supplementary. Angles N₁ and N₂ form a linear pair, so are supplementary. Angles supplementary to the same angle (N₁) are congruent, hence P₂ = x ≅ N₂

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2. ΔPMQ is isosceles, so angle Q₁ is also congruent to x.

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3. In ΔPMQ, the sum of angles is 180°, so ...

  M₁ +2x = 180°

Dividing by 2 gives ...

  M₁/2 +x = 90°

Angle M₁ subtends arc PQ of circle M. Angle R inscribed in circle M subtends the same arc, so ...

  R = (M₁/2)

  R = 90° -x

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4. From the above, we know that angles N₂ and R are complementary (total 90°), so angle S₂ = 90°. Segment MS will only intersect chord PR at right angles at the midpoint of that chord.

Hence S is the midpoint of PR and PS = SR.

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