Which of the following CANNOT be true for a triangle?
A. A triangle can be equilateral and obtuse at the same time.
B. A triangle can be equilateral and equiangular at the same time.
C. A triangle can be isosceles and right at the same time.
D. A triangle can be scalene and obtuse at the same time.
A. A triangle can be equilateral and obtuse at the same time.
B. A triangle can be equilateral and equiangular at the same time.
C. A triangle can be isosceles and right at the same time.
D. A triangle can be scalene and obtuse at the same time.
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Answer:
A.
Step-by-step explanation:
An equilateral triangle means all angles have a 60-degree measure while an obtuse triangle means it has an obtuse angle which is greater than 90 but less than 180 in measure.
All equilateral triangles are equiangular.
An Isosceles Right Triangle exists. A 45-45-90 triangle.
A triangle can be scalene and obtuse at the same time. 150-20-10 triangle for example.
Answer:
A.
Step-by-step explanation:
A triangle cannot be obtuse and equilateral at the same time. An equilateral triangle cannot have an obtuse angle because all 3 angles in an equilateral triangle measure 60 degrees.
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