At Swiss Family Robinson is a well-known adventure novel that people of many countries have enjoyed for more than two hundred years. It has also been made into graphic novels and films. The novel, written by the Swiss clergyman Johann David Wyss, is not just an adventure. It aims at teaching young people values like self-reliance, determination, love for your family, co-operation and prudent use of resources. It also has, good lessons relevant in natural sciences, good husbandry and even mathematics! Some elements of the novel do stretch reality to a certain extent - but we must consider that it is a work of fiction and, not a fact file. Given below is a synopsis — an outline of its basic story. William, Elizabeth and their children had been travelling in a, ship when the ship was caught in a great -storm. The other passengers evacuated without them. The other passengers evacuated without them. William, and his family including the young children Fritz, Ernest, Jack and Franz, were left, to survive alone. They weathered the great storm waiting in the ship’s hold. The snip survived the night and the family found /themselves within sight of a tropical desert island. The next morning, they decided to get to the island they could see beyond the reef. With much effort, they constructeda vessel out of tubs. After they filled the tubs with food and ammunition and all other articles of value they could safely carry, they rowed toward the. Island. Two dogs from the ship named Turk and Juno swam beside them. The ship’s cargo of livestock, guns and powder, carpentry tools, books, a disassembled pinnace, and provisions had also survived.
What does the novel aim at teaching ?
Answers
Hii
To travel from one point to another without physically crossing the distance between the two points.
teleportverb
To move an object in this fashion, as by telekinesis.
Answer:
Answer:
(i) 31°
(ii) 59°
(iii) 59°.
Step-by-step explanation:
Given,
ABCD is a rectangle.
∠AOB is 118°.
In ∆ABD and ∆ABC.
⇒AB = AB [Common side]
⇒∠A = ∠B = 90° [All angles of rectangle are right angled]
⇒ AD = BC [Opposite sides of rectangle are equal]
By SAS congruence rule :
∆ABD ≌ ∆ABC .
By CPCT :
→ ∠ABO = ∠OAB
→ ∠ADO = ∠OCB
Now finding angles :
(i) ∠ABO
In ∆AOB :
By angle sum property of triangle :
\longrightarrow⟶ ∠AOB + ∠ABO + ∠OAB = 180°
\longrightarrow⟶ 118° + ∠ABO + ∠ABO = 180° [∠AOB = 118° and ∠ABO = ∠OAB as we proved above]
\longrightarrow⟶ 118° + 2∠ABO = 180°
\longrightarrow⟶ 2∠ABO = 180° - 118°
\longrightarrow⟶ 2∠ABO = 62°
\longrightarrow⟶ ∠ABO = 62°/2
\longrightarrow⟶ ∠ABO = 31°
Thus,
∠ABO is 31°.
(ii) ∠ADO
In ∆ABD :
By angle sum property :
\longrightarrow⟶ ∠ADO + ∠BAD + ∠ABD = 180°
\longrightarrow⟶ ∠ADO + 90° + 31° = 180° [∠BAD = 90° as it is one of angle of rectangle and ∠ABD or ∠ABO = 31°]
\longrightarrow⟶ ∠ADO + 121° = 180°
\longrightarrow⟶ ∠ADO = 180° - 121°
\longrightarrow⟶ ∠ADO = 59°
Thus,
∠ADO is 59°.
(iii) ∠OCB
→ ∠OCB = ∠ADO [As we proved above]
→ ∠ADO = 59° [As we have find it in (ii) part]
So,
→ ∠OCB = 59°
Thus,
∠OCB is 59°.