What is the SAS Congruence Theorem for Triangles - Congruent Triangles

The video tutorial explains the Side-Angle-Side (SAS) theorem for proving triangle congruence. It emphasizes that the angle must be between the two sides for SAS to apply. The tutorial addresses common misconceptions and clarifies that having equal side lengths alone does not prove congruence. It concludes by summarizing the importance of SAS in determining triangle congruence.

What does the Side-Angle-Side (SAS) theorem help determine about triangles?

• Whether two triangles are similar

• Whether two triangles are congruent

• Whether two triangles have equal perimeters

• Whether two triangles have equal areas

In the Side-Angle-Side (SAS) theorem, where must the angle be located?

• Between the two sides

• At the apex of the triangle

• Outside the triangle

• At the base of the triangle

If two triangles have two sides equal and an angle not between them, can they be congruent by SAS?

• Only if the triangles are right-angled

• No, never

• Yes, always

• Only if the triangles are isosceles

What is a common mistake students make when applying the SAS theorem?

• Using angles outside the triangle

• Using only one side and one angle

• Assuming any angle can be used

• Ignoring the length of sides

What do tick marks on triangle sides typically represent?

• Triangles are similar

• Triangles are right-angled

• Sides are equal in length

• Angles are equal