Question Number 181327 by HeferH last updated on 24/Nov/22
Answered by a.lgnaoui last updated on 24/Nov/22
$$\measuredangle{BED}=\mathrm{45}° \\ $$
Answered by a.lgnaoui last updated on 24/Nov/22
Commented by Frix last updated on 24/Nov/22
$$\mathrm{but}\:\mathrm{the}\:\mathrm{picture}\:\mathrm{obviously}\:\mathrm{shows}\:{AB}={AC} \\ $$$$\Rightarrow\:\measuredangle{B}=\measuredangle{C} \\ $$
Commented by HeferH last updated on 24/Nov/22
$${thanks}\:{sir},\:{but}\:{you}\:{are}\:{asuming}\:{that}\: \\ $$$${the}\:{diagonals}\:{of}\:{BDEC}\:{are}\:{perpendicular} \\ $$
Answered by HeferH last updated on 24/Nov/22
Commented by HeferH last updated on 24/Nov/22
$${if}\:{AB}\:=\:{AC}\:,\:{then}\:{this}\:{would}\:{be}\:{the}\:{answer} \\ $$$$\:{I}\:{couldn}'{t}\:{find}\:{more}\:{details}\:{about}\:{the}\: \\ $$$$\:{original}\:{problem}. \\ $$