Decide whether these conditions can be used to show two triangles are congruent:a Three congruent sidesb Three congruent anglesc Two congruent sides and a non-included angled Two congruent legs of a right triangle
Question
Decide whether these conditions can be used to show two triangles are congruent:a Three congruent sidesb Three congruent anglesc Two congruent sides and a non-included angled Two congruent legs of a right triangle
Solution
a. Yes, three congruent sides can be used to show two triangles are congruent. This is known as the Side-Side-Side (SSS) postulate.
b. No, three congruent angles cannot be used to show two triangles are congruent. This is because it only shows that the triangles are similar, not necessarily congruent.
c. No, two congruent sides and a non-included angle cannot be used to show two triangles are congruent. This does not meet any of the congruence postulates (SSS, SAS, ASA, AAS, HL).
d. Yes, two congruent legs of a right triangle can be used to show two triangles are congruent. This is known as the Hypotenuse-Leg (HL) theorem.
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