An old brick has a natural cavity on one side, providing a cool daytime slug hiding place. Look under any you have around the garden and dispose of the slugs found sheltering. Purposely position a few to create slug shelters, and check daily. A brick also makes a handy squishing implement.
Q Angle of the Knee. The Q angle of the knee is a measurement of the angle between the quadriceps muscles and the patella tendon and provides useful information about the alignment of the knee joint.
Complementary angles mean that the two angles, when added together, equal 90Â°. Let's call the first angle x, and its second, complementary angle 2x. So, we have x + 2x = 90. Solving for x, we get x = 30. Since the first angle was called x, that means it's measurement is 30Â°. The second angle, 2x, is just twice the first angle, so its measurement is 60Â°.