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Learn about triangle congruence criteria such as SSS, AAS, HL, SAS, and ASA for proving triangles are congruent. Master the techniques with examples.
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Included Angles & Sides Included Angle: * * * Included Side:
SIDE SIDE SIDE(SSS) A D F B C E If the sides of one triangle are congruent to the sides of a second triangle, then the triangles are congruent.
ANGLE ANGLE SIDE(AAS) A D B C F E If the if two consecutive angles and a side not between them on one triangle are congruent to two consecutive angles and a side not between them on a second triangle, then the triangles are congruent. 4
HYPOTENEUSE LEG(HL) D A B C F E If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and corresponding leg of another right triangle, then the triangles are congruent. 5
SIDE ANGLE SIDE(SAS) A D B C F E If two sides and the included angle of one triangle are congruent to the two sides and the included angle of another triangle, then the triangles are congruent. 6
ANGLE SIDE ANGLE(ASA) A D B C F E If two angles and the included side of one triangle are congruent to the two angles and the included side of another triangle, then the triangles are congruent. 7