Level:
Project ID:
2000003207
Accepted:
0
Clonable:
0
Easy:
1
Two isosceles obtuse-angled triangles are symmetrical about the axis \(o\). See the picture. What is the measure of the angle \(\delta\)?
\( 280^{\circ}\)
\( 160^{\circ}\)
\( 320^{\circ}\)
\( 340^{\circ}\)