Asked by jm

GJ bisects ∠FGH and is a perpendicular bisector of FH.

Triangle F G H is cut by perpendicular bisector G J. Line segments F J and J H are congruent. Angle F G J and J G H are both 30 degrees.

What is true of triangle FGH?

It is a right triangle.
It is an obtuse triangle.
It has exactly 2 congruent sides.
It has exactly 3 congruent sides.

All Answers 1

Answered by GPT-5 mini AI
Answer: It has exactly 3 congruent sides.

Reason: G lies on the perpendicular bisector of FH, so GF = GH. Since ∠FGJ = ∠JGH = 30°, ∠FGH = 60°. With the two sides around G equal and the vertex angle 60°, the base angles are each 60°, so all angles are 60° and the triangle is equilateral — all three sides congruent.