<prompt> Katika mchoro, PRT na QRS ni mistari iliyonyooka. Je, thamani ya x ni nini? asykuagiza olympiad;kuagiza hisabati;ukubwa 6 cm; REKEBISHAjozi r 0, 0;jozi t dir-55;jozi s dir -55 - 70;jozi p dir -55 180;qr halisi Dhambi70 Dhambi40;jozi q qr dir -55 - 70 180;chorar--p--q--s--t--r;leboR, r, 2 E;leboT, t, SE;leboS, s, SW;leboP, p, W;leboQ, q, E;leboxcirc, t, W NW NW;lebo40circ, q, 4 SW;addpathticksp--q, spacing1, s4;addpathticksq--r, spacing1, s4;addpathticksr--s, 2, spacing1, s4;addpathticksr--t, 2, spacing1, s4;asy  <response>: Tangu PQQR, tuna angle QPRpembe QRP.Kwa kuwa angle PQR pembe QPR pembe QRP 180circ, tuna 40circ 2angle QRP 180circ, hivyo 2angle QRP 140 circ au angle QRP 70circ.Kwa kuwa angle PRQ na angle SRT ni pembe za wima, tuna angle SRT angle PRQ 70circ.Tangu RSRT, tuna angle RST pembe RTS xcirc.Kutoka pembetatu RST, tuna pembe SRT pembe RST pembe RTS 180circ, kwa hivyo 70circ 2xcirc 180circ au 2x 110 au x55. 