90° , 67,5 mm modré
___ _ |_ _| __ __ __ __ | | ___ _ __ | | \ \ / / \ \ /\ / / | | / _ \ | '_ \ | | \ V / \ V V / | |___ | __/ | | | | |___| \_/ \_/\_/ |_____| \___| |_| |_|