Common Core Essential Elements Mathematics

Similar figures. 
Figures that have the same shape but different sizes. 
Similar shapes. 
Objects of the same shape but different sizes in which the corresponding angles are the same. 
Slope. 
The steepness/incline/grade of a line. 
Positive slope 
– the condition in which a line inclines from left to right. 
Negative slope 
– the condition in which a line declines from left to right. 

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COMMON CORE ESSENTIAL ELEMENTS for MATHEMATICS 
 
 
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Square. 
A four-sided polygon (a flat shape with straight sides) where all sides have equal length and every angle is a right angle 
(90°). 
Square root. 
A value that can be multiplied by itself to give the original number (e.g., the square root of 25 is 5 because 5 x 5 = 25).