Question

please answer correctly​

Answer 1

Answer:

1.B

2.50°(a)☺️☺️☺️☺️☺️☺️☺️☺️

Answer 2

Question given :

In ∆ABC if BC² + AB² = AC² , then the right angle is at _____

• A
• B
• C
• Does not exist

In the given figure AB is parallel to CD if angle APQ = 70 and angle PRD = 120 then angle QPR =

• 50°
• 60°
• 40°
• 35°

Required solutions :

In ∆ABC if BC² + AB² = AC² , then the right angle is at B point .

Reasoning :

Pythagoras theorem has been used here the hypotenuse is AC , AB and BC are legs and the triangle is right angled at B

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In the given figure AB is parallel to CD if angle APQ = 70 and angle PRD = 120 then angle QPR = 50

Reasoning :

• If Angle APQ = 70 then angle PQR is also 70° by alternate interior angle property ,

• If angle PRD = 120 then angle PRQ would be ,

• Angle PRQ + Angle PRD = 180°
• Angle PRQ = 180 - 120
• Angle PRQ = 60°

• By linear pair property

• Now by angle sum property we get ,

• Angle PRQ + angle PQR + angle QPR = 180°

• 60° + 70° + Angle QPR = 180°

• 130° + Angle QPR = 180°

• Angle QPR = 180° - 130°

• Angle QPR = 50°