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Vedmedyk [2.9K]
3 years ago
15

In the figure below angle ABD measures 41° what is the measure of angle ABC?

Mathematics
2 answers:
elena-s [515]3 years ago
7 0
It's going to be 82 (A)i think .
Alenkasestr [34]3 years ago
6 0

Answer: ∠ ABC=82°

Step-by-step explanation:

In the given picture, ΔABD and ΔBCD have BD as common.

In ΔABD and ΔBCD

∠C=∠A  [right angle]

BD=BD [common]

CD=AD  [given in the picture]

Therefore, by HL theorem ΔABD ≅ ΔBCD

⇒ ∠ABD=∠DBC=41°    [corresponding parts of congruent triangles are congruent]

Now, ∠ ABC=∠ABD+∠DBC=41°+41°=82°

Hence, ∠ ABC=82°

  • HL theorem says that if the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle then both the triangles are congruent.
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