Answer:
The correct options are A) Equilateral, C) Acute and E) Isosceles.
Explanation:
Consider the provided triangle:
Equilateral triangle: A triangle is said to be an equilateral triangle if all sides are equal.
Obtuse triangle: A triangle is said to be Obtuse triangle if one angle is greater than 90°.
Acute triangle: A triangle is said to be Acute triangle if all the 3 angles are less than 90°.
Right triangle: A triangle is said to be Right triangle if one angle is equal to 90°.
Isosceles triangle: A triangle is said to be the Isosceles triangle if it has at least two sides of equal length.
Scalene triangle: A triangle is said to be Scalene triangle if all the three sides have different length.
Now consider the provided figure:
All sides and angles of the provided triangle are equal. Also, the angles are less than 90°.
Thus, the triangle is:
Equilateral triangle because all the sides are equal.
Acute triangle because all the three angles are less than 90°.
Isosceles triangle because more than two sides are equal.
Hence, the correct options are A) Equilateral, C) Acute and E) Isosceles.