Geometry

Question Analysis:
This question challenges your understanding of logical transformations in geometric contexts.
The main focus is identifying the correct contrapositive of a triangle property.

Key Concept Explanation:
To prove "If p → q" by contrapositive, prove "If ¬q → ¬p".
Let:
p: triangle has two equal angles
q: triangle is isosceles
So the contrapositive is: If triangle is not isosceles → it does not have two equal angles.

Step-by-Step Solution:
Original: If (two equal angles) → (isosceles triangle)
Contrapositive: If not isosceles, then no two angles are equal
So, assume the triangle is not isosceles
Then its sides are all different, which implies all angles are different (by the Triangle-Angle-Side Theorem)

Option Ana...