N-gon - CORRECT ANSWER✔✔- N sides, N angles, N-2 inside triangles, interior angle
sum=(N-2) x 180 degrees
Heptagon - CORRECT ANSWER✔✔- 7 sided polygon
Octagon - CORRECT ANSWER✔✔- 8 sided polygon
Nonagon - CORRECT ANSWER✔✔- 9 sided polygon
Decagon - CORRECT ANSWER✔✔- 10 sided polygon
Isosceles Triangle - CORRECT ANSWER✔✔- A triangle with at least two congruent sides
Equilateral triangle - CORRECT ANSWER✔✔- A triangle with three congruent sides
Scalene Triangle - CORRECT ANSWER✔✔- A triangle with no congruent sides
, Right Triangle - CORRECT ANSWER✔✔- A triangle that has a 90 degree angle.
Acute Triangle - CORRECT ANSWER✔✔- A triangle that contains only angles that are less
than 90 degrees.
Obtuse Triangle - CORRECT ANSWER✔✔- A triangle with one angle that is greater than
90 degrees.
Square - CORRECT ANSWER✔✔- A quadrilateral with four right angles and four
congruent sides
Rectangle - CORRECT ANSWER✔✔- A parallelogram with 4 right angles
Rhombus - CORRECT ANSWER✔✔- A parallelogram with four congruent sides
Parallelogram - CORRECT ANSWER✔✔- A quadrilateral whose opposite sides are both
parallel and equal in length
Kite - CORRECT ANSWER✔✔- A quadrilateral that has two pairs of consecutive congruent
sides, but opposite sides are not congruent.
Trapezoid - CORRECT ANSWER✔✔- A quadrilateral with exactly one pair of parallel sides
Isosceles trapezoid - CORRECT ANSWER✔✔- A trapezoid whose nonparallel opposite
sides are congruent
Polygon - CORRECT ANSWER✔✔- A closed plane figure made up of line segments
Line - CORRECT ANSWER✔✔- is straight (no curves), • has no thickness, and. • extends in
both directions without end (infinitely).
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