What is the Definition of Congruent Triangles - Congruent Triangles

The video tutorial covers the concept of congruent triangles and polygons, emphasizing the importance of corresponding parts being congruent. It explains how to label triangles and make observations about congruence, focusing on the congruence of angles and sides. The tutorial also highlights the significance of maintaining the correct order when labeling corresponding parts to ensure accurate representation of congruence.

What is the key condition for polygons to be congruent?

• All angles must be acute.

• All sides must be parallel.

• Corresponding parts must be congruent.

• All angles must be right angles.

Why is it important not to assume equal measures in triangles?

• Because all triangles are different.

• Because it can lead to incorrect conclusions.

• Because sides are always unequal.

• Because angles are always equal.

Which of the following is true about corresponding angles in congruent triangles?

• They are always different.

• They are equal in measure.

• They are always acute.

• They are always obtuse.

What must be true for two triangles to be considered congruent?

• Both their angles and sides must be congruent.

• Only their angles must be congruent.

• Only their perimeters must be equal.

• Only their sides must be congruent.

Why is the order of labeling sides important in congruent triangles?

• To make the triangles identical.

• To ensure the triangles are isosceles.

• To match corresponding angles correctly.

• To ensure the triangles are similar.

If side MN is congruent to side ZX, what does this imply about the angles?

• Angle M is congruent to angle X.

• Angle N is congruent to angle Y.

• Angle M is congruent to angle Z.

• Angle N is congruent to angle Z.

What is the correct way to label the side congruent to ML in another triangle?

• XY

• YZ

• ZY

• YX