In triangles ABC and PQR, AB = AC, ∠C = ∠P and ∠B = ∠Q. The two triangles are ___. isosceles but not congruent isosceles and congruent congruent but not isosceles neither congruent nor isosceles

y1i2de1o64w

y1i2de1o64w

Answered question

2022-12-29

In triangles ABC and PQR, AB = AC, ∠C = ∠P and ∠B = ∠Q. The two triangles are ___.
isosceles but not congruent
isosceles and congruent
congruent but not isosceles
neither congruent nor isosceles

Answer & Explanation

Cayden Hull

Cayden Hull

Beginner2022-12-30Added 8 answers

The correct option is D isosceles but not congruent


∠A+ ∠B+ ∠C = ∠P+ ∠Q+ ∠R
But, ∠C = ∠P and ∠B = ∠Q ----(1)
∠A+ ∠B+ ∠C = ∠C+ ∠B+ ∠R
Therefore, ∠A = ∠R
△ABC ≈ △PQR (AAA similarity)
As AB = AC, △ABC is an isosceles triangle.
∠B = ∠C (opposite angles of equal sides)
∠P = ∠Q
△PQR is isosceles.
The relation between sides of the 2 triangles is not known, congruency between the 2 triangles either by SAS or ASA cannot be proved.
△ABC and △PQR are similar and isosceles triangles.

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