![]() The minute and hour hands are both fixed at a point in the middle of the clock. Drawings of angles will often include an arc (as shown above) to help the reader identify the correct ‘side’ of the angle. The length of the rays has nothing to do with the size of the angle itself. When people talk about the “size” of an angle, they are referring to the arc between the two rays. Sometimes angles are very narrow sometimes they are very wide. Notice that the label of each angle is written “point-vertex-point,” and the geometric notation is in the form \(\ \angle A B C\). The image below shows a few angles on a plane. When you are naming angles, be careful to include the vertex (here, point \(\ B\)) as the middle letter. This angle can also be called \(\ \angle A B C\), \(\ \angle C B A\), or simply \(\ \angle B\). The common endpoint of the angle is called the vertex. For example, two rays with a common endpoint make up an angle. Lines, line segments, points, and rays are the building blocks of other figures. Total running time of the script: ( 0 minutes 3.\). text ( x = 7, y = y + 0.6, text = "y", font = font ) fig. text ( x = 6, y = y + 0.6, text = "x", font = font ) # use a dash in y direction (y) with a size of 0.9 cm, # linewidth is set to 2p and the linecolor to "gray40" fig. text ( x = 5, y = y + 0.6, text = "t", font = font ) # use cross (x) with a size of 0.9 cm, # linewidth is set to 2p and the linecolor to "gray40" fig. plot ( x = 5, y = y, style = "t0.9c", pen = "1p,black", fill = "magenta4" ) fig. text ( x = 4, y = y + 0.6, text = "s", font = font ) # use triangle (t) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "magenta4" fig. text ( x = 3, y = y + 0.6, text = "p", font = font ) # use square (s) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "gold2" fig. ![]() plot ( x = 3, y = y, style = "p0.9c", fill = "slateblue" ) fig. text ( x = 2, y = y + 0.6, text = "n", font = font ) # use a point (p) with a size of 0.9 cm, # color fill is set to "lightseagreen" fig. plot ( x = 2, y = y, style = "n0.9c", pen = "1p,black", fill = "lightseagreen" ) fig. text ( x = 1, y = y + 0.6, text = "i", font = font ) # use pentagon (n) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "lightseagreen" fig. plot ( x = 1, y = y, style = "i0.9c", pen = "1p,black", fill = "tomato" ) fig. text ( x = 7, y = y + 0.6, text = "h", font = font ) # lower row y = 0.5 # use an inverted triangle (i) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "tomato" fig. plot ( x = 7, y = y, style = "h0.9c", pen = "1p,black", fill = "lightgray" ) fig. text ( x = 6, y = y + 0.6, text = "g", font = font ) # use a hexagon (h) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "lightgray" fig. plot ( x = 6, y = y, style = "g0.9c", pen = "1p,black", fill = "dodgerblue4" ) fig. text ( x = 5, y = y + 0.6, text = "d", font = font ) # use a octagon (g) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "dodgerblue4" fig. plot ( x = 5, y = y, style = "d0.9c", pen = "1p,black", fill = "seagreen" ) fig. text ( x = 4, y = y + 0.6, text = "c", font = font ) # use a diamond (d) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "seagreen" fig. plot ( x = 4, y = y, style = "c0.9c", pen = "1p,black", fill = "darkred" ) fig. text ( x = 3, y = y + 0.6, text = "a", font = font ) # use a circle (c) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" and the # color fill to "darkred" fig. plot ( x = 3, y = y, style = "a0.9c", pen = "1p,black", fill = "darkorange" ) fig. text ( x = 2, y = y + 0.6, text = "+", font = font ) # use a star (a) with a size of 0.9 cm, # linewidth is set to 1p, the linecolor to "black" (default) and the # color fill to "darkorange" fig. text ( x = 1, y = y + 0.6, text = "-", font = font ) # use a plus (+) with a size of 0.9 cm, # linewidth is set to 2p and the linecolor to "gray40" fig. basemap ( region =, projection = "X12c/4c", frame = True ) # define fontstlye for annotations font = "15p,Helvetica-Bold" # upper row y = 2 # use a dash in x direction (-) with a size of 0.9 cm, # linewidth is set to 2p and the linecolor to "gray40" fig.
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