Given:ABCD is a square
FG, BC
BC = BE
AECG = AEBG
ABEC is equilateral
m2BEC = 60°
Prove:m2 ECD = 30°
Reasons
Statements
1. ABEC is equilateral
2. m2 GCE = 60°
3. ABCD is a square
4. Substitution
Plz help!!

Given:ABCD is a square FG, BC BC = BE AECG = AEBG ABEC is equilateral m2BEC = 60° Prove:m2 ECD = 30°

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Ответ:

machucagm01

05.02.2023

Mathematics

130

Step-by-step explanation:

Arc length = 2*pi*r*(central angle)/360

18=2*pi*8*(central angle)/360

Central angle=130

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Given:ABCD is a square FG, BC BC = BE AECG = AEBG ABEC is equilateral m2BEC = 60° Prove:m2 ECD = 30° Reasons Statements 1. ABEC is equilateral 2. m2 GCE = 60° 3. ABCD is a square 4. Substitution Plz help!!