What are the differences between Plane angle and solid angle?

What is the relation between angle of friction and angle of repose

In the adjacent figures, If angle1 = angle3, angle2 = angle4 and angle3 = angle4 write the relations between angle1 and angle2 using an Euclid's postulate.

The difference between any two consecutive interior angles of a polygon is 5^@ .If the smallest angle is 120^@ , find the number of the sides of the polygon.

Given unit vectors hatm hatn and hatp such that angle between hatm and hatn is alpha and angle between hatp and

What is the dihedral angle of H_2O_2 in gas and solid phase ?

Take three different colour sheets , place one over the other and draw a triangle on the top sheet. Cut the sheets to get triangles of different colour which are identical. Mark the vertices and the angles as shown. Place the interior angles angle1,angle2 and angle3 on a straight line, adjacent to each other, without leaving any gap. What can you say about the total measure of the three angles angle1,angle2 and angle3 ? Can you use the same figure to explain the ''Exterior angle property'' of a triangle ? If a side of a triangle is stretched, the exterior angle so formed is equal to the sum of the two remote interior angles.

Statement 1: Let theta be the angle between the line (x-2)/2=(y-1)/(-3)=(z+2)/(-2) and the plane x+y-z=5. Then theta=sin^(-1)(1//sqrt(51))dot Statement 2: The angle between a straight line and a plane is the complement of the angle between the line and the normal to the plane.