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## Geomatrical Figure

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**Geomatrical Figure**Present to M.Veerasakdi By : Jaruphat Zhang Class P.4/6 No.43**Rectangle**A rectangle is a four-side shape where every angle is a right angle(90°). Also opposite sides are parallel and of equal length.**Square**A square has equal sides and every angle is right angle (90º) Also opposite sides are parallel.**Parallelogram**Opposite sides are parallel and equal in length, and opposite angles are equal (angle “a” are the same, and angles “b” are the same)**Rhombus**A rhombus is a four-sided shape where all sides have equal length. Also opposite side are parallel amd opposite angles are equal.**Triangles**There are several different types of triangles. You can classify a triangle by its sides and its angles. There are THREE different classifications for triangles based on their sides. There are FOUR different classifications for triangles based on their angles.**Classifying Triangles by Sides**EQUILATERAL - 3 congruent sides ISOSCELES – at least two sides congruent SCALENE – no sides congruent**Classifying Triangles by Angles**• EQUIANGULAR – all angles are congruent • ACUTE – all angles are acute • RIGHT – one right angle • OBTUSE – one obtuse angle**Can You Classify the Different Triangles in the Picture**Below? Classify the following triangles : AED, ABC, ACD, ACE**The Classifications…**• Triangle AED = Equilateral, Equiangular • Triangle ABC = Equilateral, Equiangular • Triangle ACD = Isoceles, Obtuse • Triangle ACE = Scalene, Right • So how did you do?