Answer:A.) = 40° B.) = 90° C.) = 53.5° D.) = 34° E.) = 90° F.) = 52.9° G.) = 90° H.) = 59.6° I.) = 119.1° J.) = 30.4° K.) = 90° L.) = 72° M.) = 107.3° N.) = 47.7° O.) = 36° P.) = 90°Step-by-step explanation:All triangles are 180°So:A.) 72 + 68 = 140 180 - 140 = 40The little boxes in the triangle indicates that the angle is a right angle. Right angles are 90°B.) Is a right angleC.) 36.5 + 90 = 126.5 180 - 126.5 = 53.5D.) 56 + 90 = 146 180 - 146 = 34E.) Is a right angleF.) 95 + 32.1 = 127.1 180 - 127.1 = 52.9G.) Is a right angleH.) 30.4 + 90 = 120.4 180 - 120.4 = 59.6To find angle I you have to find angle J first. So, because there is a box. That indicates that both angle equal 90°.So you have to subtract H from 90° H = 59.6J.) 59.6 - 90 = 30.4I.) 30.5 + 30.4 = 60.9 180 - 60.9 = 119.1K.) 45 + 45 = 90 180 - 90 = 90L.) 33 + 75 = 108 180 - 108 = 72M.) 37 + 35.7 = 72.7 180 - 72.7 = 107.3N.) 92.3 + 40 = 132.3 180 - 132.3 = 47.7O.) 54 + 90 = 144 180 - 144 = 36P.) Is a right angleHope this helps : )