<prompt> Katika pembetatu CAT, tuna angleACTpembeATC na angleCAT36circ. Ikiwa overlineTR inatenganisha angleATC mara mbili, basi angleCRT ni digrii ngapi? asy AMC8 2000 13 Tatizo kuchora0,0--.5,1.75--1,0--mzunguko;chora1,0--.15,.5;leboR, .15,.5, W;leboC, 0,0, SW;leboT, 1,0, SE;leboA, .5,1.75, N;asy  <response>: Kwa kuwa angle ACTangle ATC na angle CAT36circ, tuna 2angle ATC 180circ-36circ 144circ na angleATCangle ACT72circ. Kwa sababu overlineTR inatenganisha angle mara mbiliATC, angle CTRfrac1272circ36circ. Katika pembetatu CRT, angle CRT180circ-36circ-72circ72circ. 