Question

*समांतरभुज चौकोनाच्या लगतच्या कोनांचे मापांचे गुणोत्तर 4:5 आहे तर त्या कोनांचे माप काय असेल?*

1️⃣ 80⁰, 100⁰
2️⃣ 60⁰,120⁰
3️⃣ 70⁰,110⁰
4️⃣ 90⁰,90⁰​

Answer 1

1st one is your exact answer for your question

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

If the ratio of the adjacent angles of a parallelogram is 4: 5, what will be the measure of those angles

1. 80° , 100°

2. 60° , 120°

3. 70° , 110°

4. 90° , 90°

CONCEPT TO BE IMPLEMENTED

The sum of any two adjacent angles of a parallelogram is equal to 180°

EVALUATION

Here it is given that the ratio of the adjacent angles of a parallelogram is 4 : 5

Let the angles are 4x and 5x

We know that the sum of any two adjacent angles of a parallelogram is equal to 180°

So by the given condition

4x + 5x = 180°

⇒9x = 180°

⇒x = 20°

∴ First angle = 4x = ( 4 × 20° ) = 80°

Second angle = 5x = ( 5 × 20° ) = 100°

FINAL ANSWER

Hence the correct option is 1. 80° , 100°

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