prove that the diagonals of a parallelogram divides it into two congruent triangles.
Answers
Answered by
6
Statement : A diagonal of a parallelogram divides it into two congruent triangles.
Given : A parallelogram ABCD.
To prove : ΔBAC ≅ ΔDCA
Construction : Draw a diagonal AC.
Proof :
In ΔBAC and ΔDCA,
∠1 = ∠2 [alternate interior angles]
∠3 = ∠4 [alternate interior angles]
AC = AC [common]
ΔBAC ≅ ΔDCA [ASA]
Hence, it is proved.
Given : A parallelogram ABCD.
To prove : ΔBAC ≅ ΔDCA
Construction : Draw a diagonal AC.
Proof :
In ΔBAC and ΔDCA,
∠1 = ∠2 [alternate interior angles]
∠3 = ∠4 [alternate interior angles]
AC = AC [common]
ΔBAC ≅ ΔDCA [ASA]
Hence, it is proved.
Similar questions