Which of these statements about triangles is not true?
A An isosceles triangle can also be a right triangle.
B An acute triangle can also be an equilateral triangle.
C A right triangle can also be an obtuse triangle.
D An obtuse triangle can also be an isosceles triangle.

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Answers

2014-11-18T21:28:49+08:00

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The answer is D because a triangle is composed of 3 acute angles or 2 acute angles and 1 right angle
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2014-11-18T21:45:54+08:00

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C. A right triangle can also be an obtuse triangle
Because in a triangle, the sum of all angles must be 180º.
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