Ch - 11
Constructions
Class 9th
please answer with explaination.
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Ch - 11
Constructions
Class 9th
please answer with explaination.
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1.)Which of the following angle can be constructed with the help of a ruler and a pair of compasses?
90°
2.)Which of these angles cannot be constructed using ruler and compasses?
140°
3.)Which of the following can be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?
2.1 cm
4.)The construction of a triangle ΔABC in which BC = 6 cm, ∠A = 50° is not possible, when difference of BC and AC is equal to
6.4 cm
5.)The construction of the triangle ABC is possible if it is given that BC = 4 cm, ∠C = 60° and the difference of AB and AC is
4.5 cm
6.)Which of the following set of lengths can be the sides of a triangle?
5.5cm, 6.5cm, 8.9cm
7.)Which of the following sets of angles can be the angles of a triangle?
40°,60°,70°
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Answer:
1.)Which of the following angle can be constructed with the help of a ruler and a pair of compasses?
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Answer
90°
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Question:−
2.)Which of these angles cannot be constructed using ruler and compasses?
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
140°
\Large{\underline{\rm{\green{Question:-}}}}
Question:−
3.)Which of the following can be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
2.1 cm
\Large{\underline{\rm{\green{Question:-}}}}
Question:−
4.)The construction of a triangle ΔABC in which BC = 6 cm, ∠A = 50° is not possible, when difference of BC and AC is equal to
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
6.4 cm
\Large{\underline{\rm{\green{Question:-}}}}
Question:−
5.)The construction of the triangle ABC is possible if it is given that BC = 4 cm, ∠C = 60° and the difference of AB and AC is
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
4.5 cm
\Large{\underline{\rm{\green{Question:-}}}}
Question:−
6.)Which of the following set of lengths can be the sides of a triangle?
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
5.5cm, 6.5cm, 8.9cm
\Large{\underline{\rm{\green{Question:-}}}}
Question:−
7.)Which of the following sets of angles can be the angles of a triangle?
{\large{\bold{\sf{\bf {\underline{Answer}}}}}}
Answer
40°,60°,70°
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