If you know two angles of a triangle, you can determine the third angle because the sum of all three angles is ___ degrees. If you know two angles of a triangle, you can determine the third angle because the sum of all three angles is \( \square \) degrees. (Type a whole number.)

(a) Rajah di bawah menunjukkan sebuah gabungan pepejal yang terdiri daripada sebuah kubus dan sebuah prisma dengan keratan rentas berbentuk segi tiga sama sisi. Pepejal itu terletak di atas satah mengufuk. The diagram below shows a combined solid consists of a cube and a prism with an equilateral triangle as its cross section. The solid lies on a horizontal plane.

s siguientes opciones representa una rotación de la figura, en \( 45^{\circ} \) con centro en c

Un trapezio isoscele è circoscritto a una circon- ferenza. Sapendo che un lato obliquo è lun- go 22 cm e le basi sono una \( 4 / 7 \) dell'altra, calcola le loro misure. \( \quad[16 \mathrm{~cm} ; 28 \mathrm{~cm}] \)

Consider Line 1, which has the equation: \( y=\frac{1}{3} x-9 \). Give the equation of the line parallel to Line 1 which passes through \( (1,-8) \). Include the full equation as your answer. The equation is Give the equation of the line perpendicular to Line 1 which passes through \( (1,-8) \) Include the full equation as your answer. The equation is

Известно, что \( \angle 1: \angle 2: \angle 3=7: 8: 3 \). Найдите \( \angle 1+\angle 3 \). Ответ дайте в