Anyone know? A. 99 B. 100 C. 121 D. Cannot be determined

Question

asked Dec 25, 2019 24.5k views

1 Answer

Smc · Answer 1 · 2019-12-31T02:10:48+0000

Since, it is given that the pentagon ABCDE is congruent to pentagon FGHIJ.

By being congruent, the corresponding angles and sides are equal.

Therefore,
$\angle A = \angle F$ ,
$\angle B = \angle G$ ,
$\angle C = \angle H$ ,
$\angle D= \angle I$ ,
$\angle E = \angle J$ .

By using
$\angle A = \angle F$

So,
$100^\circ = \angle 1$

Therefore, the measure of angle 1 is 100 degrees.

So, Option B is the correct answer.