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## Polygons

### Mathematics, Grade 4

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equilateral triangle isosceles triangle right triangle obtuse triangle acute triangle scalene triangle square rectangle parallelogram rhombus trapezoid Triangles Polygons with three sides Quadrilaterals Polygons with four sides vertex side Polygons are plane figures (flat shapes) with three or more sides. A polygon is made by joining line segments. Each line segment is a side. A vertex is the point where the sides meet. Polygon equilateral triangle isosceles triangle right triangle obtuse triangle acute triangle scalene triangle square rectangle parallelogram rhombus trapezoid © Copyright NewPath Learning. All Rights Reserved. 93-4405 www.newpathlearning.com Polygons All three sides have equal length One of the angles is a right angle (90º) All three angles are acute angles (less than a right angle) One of the angles is an obtuse angle (greater than a right angle) At least two sides have equal length A four-sided polygon with two pairs of parallel sides Four sides of equal length and four right angles A four-sided polygon with four right angles A four-sided polygon with one pair of parallel sides Opposite sides are parallel and all four sides have equal length All three sides have different lengths
\|xiBAHBDy01659lz[ Key Vocabulary Terms acute triangle rectangle equilateral triangle rhombus isosceles triangle right triangle line segment scalene triangle obtuse triangle side parallelogram square plain figure trapezoid polygon triangle quadrilateral vertex Triangles Polygons with three sides Quadrilaterals Polygons with four sides Polygons are (flat shapes) with three or more sides. A polygon is made by joining . Each line segment is a . A is the point where the sides meet. © Copyright NewPath Learning. All Rights Reserved. 93-4405 www.newpathlearning.com Polygons All three sides have length One of the angles is a angle (90º) All three angles are angles (less than a right angle) One of the angles is an angle (greater than a right angle) At least two sides have length A four-sided polygon with two pairs of sides Four sides of length and four angles A four-sided polygon with four angles A four-sided polygon with one pair of sides Opposite sides are and all four sides have length All three sides have lengths