Answer:
Explanation:
If we reflect triangle BCD about the line perpendicular to the diameter, it will coincide exactly with triangle DAC; the two triangles are congruent.
b. DAC≅DBC
∠DCB≅∠DCA=90° as they are right angles at the perpendicular lines
DC=DC reflexive property(they are the same line)
AC=CB they are both the radius of the same circle
DAC≅DBC due to SAS(Side angle Side)
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