To Start With - Very Easy!
Source: 1981 National High School Mathematics League, Problem 1
February 20, 2020
geometry
Problem Statement
Given two conditions:
A: Two triangles have the same area and two corresponding edge equal.
B: Two triangles are congruent.
Then, which one of the followings are true?
A is sufficient and necessary condition of B.
A is necessary but insufficient condition of B.
A is sufficient but unnecessary condition of B.
A is insufficient and unnecessary condition of B.