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RIGHT-ANGLED TRIANGLES 1. Exercise a) A ladder, 6m long, is resting against a wall. If the top of the ladder is 4 m above the ground, how far from the wall is the base of the ladder? b) Prove that a triangle with lengths 9,12 and 15 cm is right-angled. 2. Vocabulary a right-angled triangle : côté opposé : conversely : le milieu : moreover : en conséquence: actually: hypoténuse: contrary to: à condition que: Theorem : Pythagoras' theorem can be stated as Property: the converse is true: 3. For next time a) A rectangular field has a length of 250 m and a width of 130 m. Find the length of the diagonal path across it. b) ABC is a triangle such as 5;82;223 =+=+= ACBCAB . Is it right-angled? 4. More vocabulary...

  • prime numbers

  • greek mathematicians

  • prime divisor

  • numbers

  • right-angled

  • triangle such

  • prime numbers lower

  • than


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RIGHT-ANGLED TRIANGLES 1. Exercise a) A ladder, 6m long, is resting against a wall. If the top of the ladder is 4 m above the ground, how far from the wall is the base of the ladder?b) Prove that a triangle with lengths 9,12 and 15 cm is right-angled.2. Vocabulary a right-angled triangle :côté opposé : conversely :le milieu : moreover :en conséquence: actually: hypoténuse: contrary to:à condition que: Theorem : Pythagoras’ theorem can be stated as Property: the converse is true: 3. For next time a) A rectangular field has a length of 250 m and a width of 130 m. Find the length of the diagonal path across it. b) ABC is a triangle such asAB13#2 2;BC12#8;AC15 . Is it right-angled? 4. More vocabulary...
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