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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

ABCD is a rectangle, if ∠BPC = 124°Calculate: (i) ∠BAP (ii) ∠ADP - Mathematics

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प्रश्न

ABCD is a rectangle, if ∠BPC = 124°
Calculate:

  1. ∠BAP
  2. ∠ADP

बेरीज

उत्तर

Given:

  • Rectangle ABCD
  • ∠BPC = 124

Key Properties of a Rectangle:

  1. Diagonals of a rectangle bisect each other.
  2. Opposite angles formed by the diagonals are equal (angles around point P add up to 360∘).

Calculate ∠BAP:

  • In △ABP, diagonal AC divides ∠BAP and ∠BPC.

  • Since diagonals of a rectangle bisect each other, the total angles around point P are split symmetrically.

  • Opposite angles: ∠BPC + ∠DPA = 180

Hence, ∠DPA = 180 − 124 = 56

Now, ∠BAP = `(∠DPA)/2`

`∠BAP = (56°)/2 = 28°`

Calculate ∠ADP:

Similarly, ∠ADP is the other half of ∠DPA:

`∠ADP = (∠DPA)/2 = 28°`

Final Answers:

  • ∠BAP = 28
  • ∠ADP = 28
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पाठ 17: Special Types of Quadrilaterals - Exercise 17 [पृष्ठ १९८]

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सेलिना Concise Mathematics [English] Class 8 ICSE
पाठ 17 Special Types of Quadrilaterals
Exercise 17 | Q 5 | पृष्ठ १९८
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