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Falconpride4079
03.08.2020 •
Mathematics
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Ответ:
82 degrees
Step-by-step explanation:
Measure of arc ABC = 86*2 = 172 degrees.
Measure of arc DC = 360 - (145+172) = 360-317 = 43 degrees.
Measure of arc BCD = 121+43 = 164 degrees.
Measure of angle A = 164/2 = 82 degrees
Ответ:
The important thing to notice here is that angle FHG is equal to angle JHK due to vertical angles. That means we have two angles and a side that are equal to each other.
So the two triangles are congruent due to Angle Side Angle.
The answer is C.