Triangle Vocabulary Equilateral:

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Presentation transcript:

Triangle Vocabulary Equilateral: A triangle with three sides with equal lengths Isosceles: A triangle with two sides of equal length Scalene: A triangle with no equal sides

Triangle Vocabulary Acute Triangle: A triangle with three acute angles Obtuse Triangle: A triangle with one obtuse angle Right Triangle: A triangle with one right angle

Quadrilateral Vocabulary Polygon: A closed figure with at least three sides Quadrilateral: A four sided figure Parallelogram: Two pairs of parallel sides and two pairs of congruent sides

Quadrilateral Vocabulary Rectangle: Four right angles Rhombus: Four congruent sides Square: Four right angles and four congruent sides Trapezoid: One pair of parallel sides

Polygon Vocabulary Polygon: A closed figure with at least three sides Triangle: A three sided polygon Quadrilateral: A four sided polygon Pentagon: A five sided polygon

Polygon Vocabulary Hexagon: A six sided polygon Heptagon (Septagon) A seven sided polygon Octagon An eight sided polygon Nonagon A nine sided polygon Decagon A ten sided polygon

Polygon Vocabulary Congruent: Equal Regular: All sides and angles of a polygon are congruent Diagonal: A line joining two nonconsecutive vertices of a polygon