In a parallelogram ABCD, angle A and angle B are in the ratio 1:2. Find angle A.
2024
In a parallelogram ABCD, angle A and angle B are in the ratio 1:2. Find angle A.
- A.
30°
- B.
45°
- C.
60°
- D.
More than one of the above
- E.
None of the above
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Correct answer: C
Step 1: In a parallelogram, adjacent angles are supplementary, meaning they add up to 180°.
Step 2: Let angle A be x and angle B be 2x, as per the given ratio 1:2.
Step 3: Since angle A + angle B = 180°, we have x + 2x = 180°.
Step 4: Simplify: 3x = 180° → x = 60°.
Step 5: Therefore, angle A is 60°.
हिन्दी उत्तर:
चरण 1: समांतर चतुर्भुज में, आसन्न कोणों का योग 180° होता है।
चरण 2: माना कि कोण A = x और कोण B = 2x, जैसा कि 1:2 के अनुपात के अनुसार है।
चरण 3: चूँकि कोण A + कोण B = 180°, इसलिए x + 2x = 180°।
चरण 4: सरल करने पर: 3x = 180° → x = 60°।
चरण 5: अतः कोण A = 60° है।
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