Which statement can be used to classify this triangle as an isosceles triangle?
Angle F is a right angle.
Sides FD and DE are congruent.
Sides DE and EF are congruent.
Sides EF and FD are congruent.
Which statement can be used to classify this triangle as an isosceles triangle?
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The statement that can be used to classify the triangle as an isosceles triangle is: Sides FD and DE are congruent.
An isosceles triangle is defined as a triangle with at least two sides that are equal in length (congruent). Since sides FD and DE are congruent, this means that the triangle has at least two equal sides, thereby classifying it as isosceles. If you have more questions about triangles or geometry, feel free to ask!