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1 answer:
Answer:
(1) equilateral triangle
Step-by-step explanation:
Firstly, we will find all angles of triangle BCD
we are given
m<C=60
m<A=35
m<ABD=25
we know that sum of all angles in any triangle is 180
so, we get
m<A +m<ABD+m<DBC+m<C=180
we can plug values
35+25+m<DBC+60=180
m<DBC=180-120
m<DBC=60
now, we can find other angle
m<DBC+m<C+m<CDB=180
now, we can plug values
60+60+m<CDB=180
m<CDB=180-120
m<CDB=60
So, we can see that
m<C=m<DBC=m<CDB=60
so, all angles are equal
so, triangle BCD is an equilateral triangle
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