'Congruent diagonals' presentation slideshows

A Fairy Tale

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Special Quadrilaterals

388 views • 38 slides

Polygons

Polygons. Math Alliance October 5, 2010. Kevin McLeod Chris Guthrie. Session Goals. Review/finalize our definition of triangle Deepen our understanding of polygons, including the definition of polygon , and characteristics of polygons. Triangles.

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Find the sum of the interior angles of a (an):

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HOT SEAT

HOT SEAT. ASN Challenge. SCORING 1 st team finished 3 pts 2 nd team finished 2 pts additional teams 1 pt incorrect answer -1 pt talking -3 pts. The diagonals of a parallelogram are perpendicular. SOMETIMES. A square is a rectangle. ALWAYS.

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Warm Up

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5.10

5.10. Prop. of Rhom., Rect., and Squares. A. B. C. D. Rhombus Corollary. A quadrilateral is a rhombus if and only if it has four congruent _______. sides. ABCD is a rhombus if and only if. 5.10. Prop. of Rhom., Rect., and Squares. B. A. C. D. Rectangle Corollary.

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2.3c: Quadrilaterals

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Quadrilaterals

Quadrilaterals. 4 sides 2. angles add to 360. Parallelogram. Opposite sides are parallel and congruent Opposite angles are congruent Adjacent angles are supplementary Diagonals bisect eachother. Rectangle. Opposite sides are parallel and congruent All angles are right

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Lesson 5.10 Page 317

Lesson 5.10 Page 317. Properties of Rhombuses, Rectangles, and Squares. What is a rhombus?. A rhombus is a parallelogram with four congruent sides . Is a square a rhombus? YES When is a rhombus not a square? When the angles are not all 90 ?. What is a rectangle?.

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Fun With Geometry!!!!!!!!!

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Lesson 8-R

Lesson 8-R. Chapter 8 Review. Transparency 9-1. 5-Minute Check on Chapter 8. Complete each statement about parallelogram LMNO LM ? _______ MN ? _______ ?OLM ? _______ MP ? _______ Find the measure of each interior angle

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6-4 Special Parallelograms M11.C.1 2.9.11.C

6-4 Special Parallelograms M11.C.1 2.9.11.C. Objectives: To use properties of diagonals of rhombuses and rectangles To determine whether a parallelogram is a rhombus or a rectangle. Theorems. Each diagonal of a rhombus bisects two angles of the rhombus.

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6-5 Conditions for Rhombuses, Rectangles, and Squares

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Proofs Using Coordinate Geometry

Proofs Using Coordinate Geometry. How Does a Coordinate Proof Work?. Proofs using coordinate geometry use the slope, midpoint, and distance formulas to proof rules and theorems. Ex: Prove a Rectangle H as C ongruent D iagonals.

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Rectangle Proofs

Rectangle Proofs. A rectangle is a parallelogram with four right angles and congruent diagonals. Methods of Proving a quadrilateral is a Rectangle. Show that both pairs of opposite sides are parallel and that adjacent sides are perpendicular forming right angles. - Use slope for 4 sides

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Rectangles

Rectangles. Rectangle - A parallelogram with four right angles. Theorem 8.13 If a parallelogram is a rectangle, then its diagonals are congruent. Theorem 8.14 If the diagonals of a parallelogram are congruent, then it is a rectangle. Rectangles. Summary of Properties of a Rectangle:

710 views • 6 slides

Quadrilateral Properties

Quadrilateral Properties . Always/ Sometimes/ Never And Must be: could be And Name that quadrilateral. Choose always, sometimes or never for each. A parallelogram is a square A rhombus is a rectangle A trapezoid is a parallelogram A square is a rhombus. Sometimes Sometimes Never

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Quadrilateral Properties

Quadrilateral Properties. Always/ Sometimes/ Never And Must be: could be And Name that quadrilateral. Choose always, sometimes or never for each. A parallelogram is a square A rhombus is a rectangle A trapezoid is a parallelogram A square is a rhombus. Sometimes Sometimes Never

187 views • 5 slides

Quadrilateral Properties

Quadrilateral Properties. Must be : Could be. State the Must be / Could be for each. Diagonals bisect each other llgram / rect , rhom , square Diagonals are perpendicular Quad /kite, square, rhombus 4 congruent angles Rectangle /square 4 congruent sides Rhombus /square.

112 views • 3 slides