shhabd
shhabd
20-03-2021
Mathematics
contestada
Find m possible answers are 49, 52, 132, 138
Respuesta :
atly
atly
20-03-2021
∠ABE = (180°-32°)/ 2 (base∠s of isos. △)
=74°
∠EBC= ∠EDC (base∠s of isos. △)
= 64°
∴ ∠ABC= ∠ABE+∠EBC
= 74°+64°
= 138°
∠BCD= 180°-64°-64° (base∠s of isos. △)
= 52°
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