When measuring the lengths of sides for triangle congruence, why is angle measurement unnecessary?

Angles determine the triangles' size.

Given sides determine the triangle's shape.

Measurement is inaccurate.

Angles change with size.

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Q1.

Which condition is NOT sufficient to prove that two triangles are congruent?

Q2.

Which of the following pairs of triangles can be proven congruent using the SAS criterion?

Q3.

If two triangles have two corresponding sides of the same length and the included angle is different, what can be said about the triangles?

Q4.

What method can be used to verify whether two triangles are congruent if they can be physically cut out?