If AABC ADEF, and mzA = (x + 30)°, mzC = 45°, and m A 15 degrees B 45 degrees C 50 degrees D 80 degrees

asked Jun 12, 2023 187k views

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If AABC ADEF, and mzA = (x + 30)°, mzC = 45°, and m A 15 degrees

B 45 degrees
C
50 degrees
D
80 degrees

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5 votes

Answer:

D. 80 degree

Explanation:

According to the question:

$\triangle ABC \cong \triangle DEF$

$\rm m \angle A = (x + 30) \degree \\ \rm m \angle C = 45 \degree \\ \rm m \angle D = 80 \degree$

From above congruence we can conclude:

$\rm m \angle A = m \angle D$

$\therefore$

$\rm m \angle A = 80 \degree$

Oshrib answered Jun 18, 2023

3.9k points

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