If two angles of a triangle measure 60° and 80°, respectively, then the measure of the third angle of this triangle is:
A50°
B40°
C70°
D60°
A50°
B40°
C70°
D60°
Related Questions:
ABC is an equilateral triangle with side 6 centimetres. The sides of the triangle are tangents to the circle. The radius of the circle is: