HEREDITY
BACKCROSS OR TESTCROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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32, 34, 60
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28, 30, 58
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13, 20, 27
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2, 4, 5
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Detailed explanation-1: -SOLUTION: The sum of the lengths of any two sides of a triangle must be greater than the length of the third side. Since, , you can not form a triangle with side lengths 4 ft, 9 ft, 15 ft. SOLUTION: The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
Detailed explanation-2: -The lengths 4, 5, 10 also cannot make a triangle because 4 + 5 = 9 < 10 . Look at the pictures below: The arcs show that the two sides would never meet to form a triangle. To make a triangle, two sides must add up to be greater than the third side.
Detailed explanation-3: -Sides of Triangle Rule The rule of the sides of a triangle is that the sum of the lengths of any two sides of a triangle is always greater than the length of the third side. This rule is also known as the triangle inequality theorem. This implies that we cannot have a triangle with lengths 3, 4, 9 as 3 + 4 = 7 < 9.
Detailed explanation-4: -Yes, 9, 40, 41 is a Pythagorean Triple and sides of a right triangle. No, 11, 56, 57 do not represent the sides of a right triangle.