Question | Answer |
Angle | Formed when two rays or line segments meet at a common vertex |
Vertex | a point where two or more straight lines meet. |
Ray | starts at a given point and goes off in a certain direction forever, to infinity. |
Line Segment | a straight line with two end points; contains every point on the line between its end points |
Right Angle | forms a square corner and measures 90 degrees |
Straight Angle | forms a straight line and measures 180 degrees |
Acute Angle | is smaller than a right angle and measures less than 90 degrees. |
Obtuse Angle | is larger than a right angle and measures more than 90 degrees, but less than 180 degrees. |
Congruent | figures that have the same shape and same size |
Similar | figures that have the same shape |
Symmetry | a figure is symmetrical if, when folded down the middle, it has two matching halves. |
Line of Symmetry | the folded line when finding symmetry. |
Polygon | flat shape consisting of straight lines that are joined to form a closed chain or circuit; means many |
Triangle | a polygon that has 3 sides |
Quadrilateral | a polygon that has 4 sides |
Pentagon | a polygon that has 5 sides |
Hexagon | a polygon that has 6 sides |
Heptagon | a polygon that has 7 sides |
Octagon | a polygon that has 8 sides |
Nonagon | a polygon that has 9 sides |
Decagon | a polygon that has 10 sides |
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