53,094 views
19 votes
19 votes
=

J
C
B
AB and BC are sides of congruent nine-sided regular polygons.
Angle DAB= angle DCB = 90°.
Calculate the size of angle ADC.
Not to scale

= J C B AB and BC are sides of congruent nine-sided regular polygons. Angle DAB= angle-example-1
User CwRichardKim
by
2.7k points

1 Answer

21 votes
21 votes

Answer:Triangle ABC and BCD are congruent by the side side side triangle congruence theorem

Explanation:

User Graham Hotchkiss
by
3.0k points
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