Match the labels with the symbol on the weather map

The blue line with triangles are a cold front. The red line with half circles are a warm front. The black H is high pressure. The black L is low pressure. The black dot is overcast skies. Finally the white circle with a line down and 4 lines off of that line is 40-knot winds.

Blue lines with triangles is cold front thats all i know

A,) cause a & b are equal & both gives 180°