An isosceles triangle has (5 points) a, at least two congruent sides b. two sides that are perpendicular c. three sides with the same length d. two sides that are parallel

A. at least two congruent sides

Step-by-step explanation:

Since, we know that,

'An isosceles triangle is a triangle having two sides of equal length or at least two sides of equal length (special case is equilateral triangle)'.

Thus, from the options, we see that,

Options B, C and D are not correct.

Since, congruent sides means that the lengths of the sides are equal.

Thus, we get that,

'An isosceles triangle has at least two congruent sides'.

Hence, option A is correct.

Option: A is the correct answer.

A. at least two congruent sides.

Step-by-step explanation:

Isosceles Triangle--

An isosceles triangle that has two sides of equal length.

Sometimes we may consider it as a triangle with at least two sides of equal length( and such a triangle is known as a equilateral triangle)

or we may say that a equilateral triangle is an special case of isosceles triangle.

        Hence, An isosceles triangle has:

          A) at least two congruent sides

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