If triangle PQR is congruent to triangle XYZ, which of the following must be true?

All corresponding angles are equal.

Only the sides are equal.

Only the angles are equal.

The triangles have different areas.

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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?