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Published byFernande Beauchamp Modified over 6 years ago
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The prefix Tri means 3. Triangle Trilogy Tricycle Trilingual
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A quadrilateral is a ________- ______________ polygon.
The prefix QUAD means 4. Quadrant Quadruple Quadricepts Quadrilateral A quadrilateral is a ________- ______________ polygon.
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To name a quadrilateral...
Pick one letter and name them off in clockwise order QUAD UADQ U Q ADQU A D DQUA
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Consecutive C B Consecutive Sides and π΅πΆ π΄π΅ A D One after the other
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Consecutive C B Consecutive Vertices β C β D and A D One after the other
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Segment with two nonconsecutive vertices
Diagonal C B A D Segment with two nonconsecutive vertices
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Find x.
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Find x.
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A four-sided figure with both pairs of opposite sides parallel
Parallelograms A four-sided figure with both pairs of opposite sides parallel
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Properties of Parallelograms
Opposite sides are congruent
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Opposite angles are congruent
Properties of Parallelograms Opposite angles are congruent
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Consecutive angles are supplementary.
Properties of Parallelograms ADD UP TO 180 Consecutive angles are supplementary.
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Diagonals bisect each other. This cuts the diagonals two equal pieces
Properties of Parallelograms Diagonals bisect each other. This cuts the diagonals two equal pieces
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Opposite sides are parallel
Properties of Parallelograms Opposite sides are parallel
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Find all missing sides and angles for parallelogram KLMN
23 K L 15 N M
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πΉπππ πΎπ ππ πΎπ =32. K L P N M
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Other Quadrilaterals
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Types of Parallelograms
SQUARES RECTANGLES RHOMBI
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Have all the properties of parallelograms and TWO special properties
Rectangles Have all the properties of parallelograms and TWO special properties
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RECTANGLE FOUR RIGHT ANGLES
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A quadrilateral is a RECTANGLE if and only if it has four right angles
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Diagonals are Congruent
RECTANGLE Diagonals are Congruent
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Find x and y for rectangle PQRS below:
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Find x and the lengths of the diagonals if PR = 7x and QS = 2x+10
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