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Unit # 1 Vocabulary Review 1
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coordinate plane 2
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3 -a plane (2 dimensional) -formed by intersection -of horizonal line ( x axis) -of vertical line (y axis)
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6 ordered pair - numbers that identify - a point on - a coordinate plane
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8 Why does this represent a plane?
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9 plane flat surface extends infinitely in all directions has two dimensions
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10 A? B? C?
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measure of angle What unit is used to measure an angle? 13
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14 Degrees
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15 Why type of angle? A? B? C? D? E? F?
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16 Right Angle
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18 acute angle an angle whose measure is less than 90 degrees
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20 obtuse angle an angle whose measure is greater than 90 degrees but less than 180 degrees
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21 Obtuse angle Why are these obtuse angles?
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22 What type of angle?
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23 What type of angles?
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complementary angles two angles whose measures add to 90 degrees 24
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26 supplementary angles? vertical angles? congruent angles?
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supplementary angles two angles whose measures have a sum of 180 degrees 27
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28 Why are figure 1 and figure 2 both examples of supplementary angles?
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vertical angles a pair of opposite congruent angles formed by intersecting lines 30
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congruent angles angles that have the same measure 32
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37 What concept do these figures represent?
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line of symmetry the imaginary “mirror” in line symmetry 38
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transformation - transform a change in the size or position of a figure 40
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transformations (transform) translations (translate) rotations (rotate) reflections (reflect) 41
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44 reflection
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46 translation
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48 rotation
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50 translation
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52 reflection
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54 translation
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Translation – translate a transformation movement (slide) of a figure along a straight line 55
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57 Translation movement of a figure along a straight line
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rotation - rotate a transformation in which a figure is turned around a point 58
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reflection a transformation of a figure that flips the figure across a line 60
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