asked 199k views
12 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
asked
User Sossisos
by
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1 Answer

7 votes

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

Explanation:

answered
User Warjeh
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8.2k points

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