4-2 triangle congruence by sss and sas
DESCRIPTION
4-2 Triangle Congruence by SSS and SAS. Side-Side-Side Postulate. If the three sides of one triangle are congruent to the three sides of another triangle, then the two triangles are congruent. Using SSS. Included Angles. - PowerPoint PPT PresentationTRANSCRIPT
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4-2 Triangle Congruence by SSS and SAS
![Page 2: 4-2 Triangle Congruence by SSS and SAS](https://reader035.vdocument.in/reader035/viewer/2022072921/56812ae0550346895d8eca08/html5/thumbnails/2.jpg)
Side-Side-Side Postulate
If the three sides of one triangle are congruent to the three sides of another triangle, then the two triangles are congruent.
![Page 3: 4-2 Triangle Congruence by SSS and SAS](https://reader035.vdocument.in/reader035/viewer/2022072921/56812ae0550346895d8eca08/html5/thumbnails/3.jpg)
Using SSS
![Page 4: 4-2 Triangle Congruence by SSS and SAS](https://reader035.vdocument.in/reader035/viewer/2022072921/56812ae0550346895d8eca08/html5/thumbnails/4.jpg)
![Page 5: 4-2 Triangle Congruence by SSS and SAS](https://reader035.vdocument.in/reader035/viewer/2022072921/56812ae0550346895d8eca08/html5/thumbnails/5.jpg)
Included Angles• You can also show
relationships between a pair of corresponding sides and an included angle.
Side-Angle-Side Postulate: If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.
![Page 6: 4-2 Triangle Congruence by SSS and SAS](https://reader035.vdocument.in/reader035/viewer/2022072921/56812ae0550346895d8eca08/html5/thumbnails/6.jpg)
Using SAS
• What other information do you need to prove DEF FGD by SAS?
What other information do you need to prove LEB BNL by SAS?
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Identifying Congruent Triangles
Would you use SSS or SAS to prove the triangles congruent or is there not enough information to prove them congruent?