Answer:
angle BCD=55°
Step-by-step explanation:
Let angle c be x
Let angle d be x
angle BCD is also forming a triangle
According to figure b=70°
so b+c+d=180°
70°+x+x=180°
70°+2x=180°
2x=180°-70°
x=110°÷2
x=55°
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Verified answer
Answer:
angle BCD=55°
Step-by-step explanation:
Let angle c be x
Let angle d be x
angle BCD is also forming a triangle
According to figure b=70°
so b+c+d=180°
70°+x+x=180°
70°+2x=180°
2x=180°-70°
x=110°÷2
x=55°