Mathematics Concepts

Front

Equivalent fractions

Back

Equal in value; look different, worth the same

Front

Prime number

Back

A number with only 2 factors; 1 and itself (2 is the only even prime number)

Front

Composite number

Back

A number with 3 or more factors

Front

Parallel

Back

Lines or segments that never meet or cross (like the ll’s in parallel)

Front

Perpendicular

Back

Lines or segments that meet to form a right angle (the corner of your paper will fit “just right”)

Front

Congruent

Back

Same size, same shape

Front

Line of symmetry

Back

A line that divides a figure into 2 congruent parts

Front

Acute angle

Back

Less than 90 degrees; smaller than the corner of your paper (a cute little angle)

Front

Right angle

Back

Exactly 90 degrees; corner of your paper fits just right

Front

Obtuse angle

Back

Greater than 90 degrees; bigger than the corner of your paper