word photo
regular polygon
/ɹˈɛɡjuːlɚ pˈɑːlɪɡən/
noun
a two-dimensional closed shape with straight sides and equal angles between adjacent sides, and all sides have the same length
Click to see examples

Examples






word photo
irregular polygon
/ɪɹˈɛɡjuːlɚ pˈɑːlɪɡən/
noun
a polygon that does not have all sides or angles equal in size or measure, making it non-regular and lacking symmetry
Click to see examples

Examples






word photo
convex polygon
/kɑːnvˈɛks pˈɑːlɪɡən/
noun
a geometric shape that has all its interior angles measuring less than 180 degrees, causing the polygon to curve outward
Click to see examples

Examples






word photo
concave polygon
/kɑːnkˈeɪv pˈɑːlɪɡən/
noun
a geometric shape that has at least one angle measuring greater than 180 degrees, causing the polygon to curve inward
Click to see examples

Examples






word photo
trigon
/tɹˈaɪɡɑːn/
noun
a three-sided polygon
Click to see examples

Examples






word photo
quadrilateral
/kwˌɑːdɹɪlˈæɾɚɹəl/
noun
(geometry) a flat figure with four straight sides and four angles
Click to see examples

Examples






word photo
pentagon
/ˈpɛnɪˌɡɑn/, /ˈpɛntɪˌɡɑn/
noun
(geometry) a polygon with five angles and five straight sides
Click to see examples

Examples






word photo
hexagon
/ˈhɛksəˌɡɑn/
noun
(geometry) a closed shape with six straight sides and six angles
Click to see examples

Examples






word photo
heptagon
/hˈɛptəɡˌɑːn/
noun
a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles
Click to see examples

Examples






word photo
octagon
/ˈɑktəˌɡɑn/
noun
(geometry) a polygon consisting of eight straight sides and eight angles
Click to see examples

Examples






word photo
nonagon
/nˌɑːnˈæɡɑːn/
noun
(geometry) a flat shape consisting of nine straight sides and nine angles
Click to see examples

Examples






word photo
decagon
/dᵻkˈæɡɑːn/
noun
(geometry) a flat polygon with ten straight sides and ten angles
Click to see examples

Examples






word photo
hendecagon
/hˈɛndɪkəɡˌɑːn/
noun
(geometry) a flat figure consisting of eleven straight sides and eleven angles
Click to see examples

Examples






word photo
dodecagon
/doʊdˈɛkəɡˌɑːn/
noun
(geometry) a flat figure that consists of twelve sides and twelve angles
Click to see examples

Examples






word photo
tridecagon
/tɹˈaɪdɪkəɡˌɑːn/
noun
a polygon with thirteen sides and thirteen angles
Click to see examples

Examples






word photo
tetradecagon
/tˈɛtɹeɪdkəɡˌɑːn/
noun
a polygon with fourteen sides and fourteen angles
Click to see examples

Examples






word photo
pentadecagon
/pˈɛnteɪdkəɡˌɑːn/
noun
a polygon with fifteen sides and fifteen angles
Click to see examples

Examples






word photo
hexadecagon
/hˈɛksɐdˌɛkəɡˌɑːn/
noun
a polygon with sixteen sides and sixteen angles
Click to see examples

Examples






word photo
heptadecagon
/hˈɛpteɪdkəɡˌɑːn/
noun
a polygon with seventeen sides and seventeen angles
Click to see examples

Examples






word photo
octadecagon
/ˈɑːkteɪdkəɡˌɑːn/
noun
a polygon with eighteen sides and eighteen angles
Click to see examples

Examples






word photo
enneadecagon
/ɛnˈiːdɪkəɡˌɑːn/
noun
a polygon with nineteen sides and nineteen angles
Click to see examples

Examples






word photo
icosagon
/ˈaɪkəsəɡˌɑːn/
noun
a polygon with twenty sides and twenty angles
Click to see examples

Examples






word photo
pentagram
/pˈɛntɐɡɹˌæm/
noun
a five-pointed star
Click to see examples

Examples






word photo
hexagram
/hˈɛksɐɡɹˌæm/
noun
(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon
Click to see examples

Examples






Great!

You've reviewed all the words in this lesson!

Upgrade to premium

In order to continue your learning process you must upgrade to the premium plan