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Sagot :
Answer:
B. △ABC: equilateral; △EFG: equilateral
C. △ABC: isosceles; △EFG: isosceles
Step-by-step explanation:
A triangle in which all angles are equal is an equilateral triangle. Any equilateral triangle is also an isosceles triangle (two sides/angles have the same measure).
The two triangles are both equilateral (B) and isosceles (C).
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Additional comment
The angles of an equilateral triangle are all 60°. The sides are all the same length. A right triangle will have an angle of 90°, so the given triangles cannot be right triangles. A scalene triangle has all angles/sides different measures, so the given triangles cannot be scalene.
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