logging in or signing up properties of triangles mohinimathur Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Copy Does not support media & animations WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1114 Category: Education License: All Rights Reserved Like it (3) Dislike it (0) Added: June 29, 2011 This Presentation is Public Favorites: 4 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide 1: WELCOME TO MY MATHS PROJECTSlide 2: Triangles We will… …introduction to triangles …some properties of triangles …some Criteria for Congruence of Triangles …Inequalities in a TriangleSlide 3: Introduction To TrianglesSlide 4: Introduction If A,B,C are three non Collinear points ,the figure made up by three line segments AB,BC and CA is called a Triangle. A triangle is a figure that has 3 sides and 3 angles. The three angles will always add up to 180 . ` Tri’ means three. A B CSlide 5: Find the missing angle measure? <1 = 50 ° <2= 75° <3 = ? 50 + 75 = 125 180 – 125 = 55°Slide 6: There are 4 kinds triangles by sides Right Triangle Equilateral Triangle Scalene Triangle Isosceles TriangleSlide 7: There are 4 kinds triangles by angles Acute Obtuse Right EquilateralSlide 9: Properties Of TrianglesAngle sum property of a Triangle: Angle sum property of a Triangle The sum of the angles of a triangle is 180˚. A B C B C AAngle sum property of a Triangle: Angle sum property of a Triangle 1 2 3 4 5 Angle 4 + Angle 3 + Angle 5=180º Angle 1 + Angle 3 + Angle 2=180ºExterior & Interior Opposite Angles: Exterior & Interior Opposite Angles A B C DExterior angle property of a Triangle: Exterior angle property of a Triangle A B D C Angle A + Angle B = Angle BCDExterior angle property of a Triangle: Exterior angle property of a Triangle A B D C Angle A + Angle B + Angle BCA=180º Angle BCA + Angle BCD=180º Angle A + Angle B +Angle BCA = Angle BCA+ Angle BCDSlide 15: Inequalities in a TriangleTriangle Inequality Property: Triangle Inequality Property The sum of any two sides of a triangle is greater than the third side. A B C AB+BC >AC AB+AC>BC AC+BC>ABTriangle Inequality Property: Triangle Inequality Property A B C AB+BC >ACTriangle Inequality Property: Triangle Inequality Property A B C AB+AC>BCTriangle Inequality Property: Triangle Inequality Property A B C AC+BC>ABPythagoras Theorem: Pythagoras Theorem In a right triangle, the square of the longest side is equal to the sum of squares of remaining two sides. A B C ( AC) 2 = (AB) 2 + (BC) 2 Hypotenuse 2 = Perpendicular 2 + Base 2 Base Perpendicular HypotenusePythagoras Theorem: Pythagoras TheoremSlide 22: Criteria for Congruence of TrianglesSlide 23: Definition of Congruent Triangles (CPCTC) Two triangles are congruent if and only if their corresponding parts are congruent. CPCTC C orresponding P arts of C ongruent T riangles are C ongruentSlide 24: SAS congruence rule : Two triangle are congruent if two sides and the included angle of one triangle are equal to the two sides and the included angle of the other triangle. C ongruence rule of Triangles ASA congruence rule: Two triangles are congruent if two angles and the included side of one triangle are equal to two angles and the included side of other triangle.Slide 25: .Slide 26: Thanks for watching My presentation Presented by- Mohini Mathur IX-A VISIT HERE- www.mohinimathur.com You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.