Answer:
B.
C.
Explanation:
B. an equilateral triangle is a triangle in which all three sides are equal.
C. An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°).
b,c
b:has equal sides.
c:all sides are less than 90 degrees.
not a:does not have all different side lengths.
not d:does not only have 2 equal length sides.
not e:does not have a 90 degree angle.
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