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GLOSSARY & VOCABULARY LIST Congruency Fill in the missing information Word Congruent Polygon Equilateral Quadrilateral Diagonal Bisect Convex Concave Meaning Example of use Application (Write your own Meaning) (Write your own example) (Write your own Application) Two figures or objects are congruent if they have the same shape and size, or if one is the mirror image of the other. These three triangles are congruent. ‘Poly’ means many, so a Polygon is a plane shape with many sides. Examples are Pentagon, Hexagon, Heptagon An n-gon is a polygon with n sides An equilateral triangle is a triangle in which all three sides are equal. A quadrilateral is a polygon with four sides (or edges) and four corners. Sometimes, the term quadrangle is used, A diagonal is a line joining two corners of a polygon. Informally, any sloping line is called diagonal. To divide into two equal parts. You can bisect lines, angles, and more. A polygon is Convex if no line that contains a side of the polygon contains a point in the interior of the polygon. Concave polygons "cave-in" to their interiors, creating at least one interior angle greater than 180 degrees (a reflex angle). Diagonal bracings are used to make scaffolding much more stable The dividing line is called the "bisector" The bottom of a spoon is Convex in shape The top of a spoon is Convex in shape Word Meaning Example of use Application (Write your own Meaning) (Write your own Example) (Write your own Application) Exterior Adjacent Isosceles Two angles are Adjacent when they have a common side and a common corner point and don't overlap. 102 x 104 The plural of Index “Using Index laws, we would add the Indices” The Product of the number 6 and 5 is _______ Rhombus Vertices Trapezium The points where two edges meet are the polygon's vertices (singular: vertex) or corners. The Square Root of an Integer that does not Simplify to a Whole number Parallelogram Numerical Expression All the houses in street are all Adjacent to each other. The amount of paint required to cover the Exterior of the house is this many Litres. . The required Numerical Expression needs to be written as a number How many Vertices does a standard cube have ? √144 is not a Surd as √144 = 12 An example of a Surd is: This is a figure that has four straight lines with the opposite lines parallel. Evaluating 24 Gives 2×2×2×2 = 16 Write a Numerical Expression for “Two to the Power of 4” Answer: 24 NB: This has NOT been evaluated ______