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Geometry reasons

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Fichas sobre Geometry reasons, creado por selwang el 16/05/2016.

Fichas por selwang, actualizado hace más de 1 año

	Creado por selwang hace más de 10 años

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Pregunta	Respuesta
Enter text here... Image: c3496d94-ca9c-45c4-8de7-a2c99be89f25 (image/jpeg)	The angle between a chord and a tangent equals the angle in the alternate (opposite) segment. ( ∠ in alt. seg. )
Enter text here... Image: 5c32ed1f-d8f8-4c34-8036-cdd68dda8115 (image/jpeg)	The perpendicular from the centre to the chord bisects the chord. ( ⊥ from centre to chord )
Enter text here... Image: 4f3a1adc-2255-40b9-865b-fad49df7a89c (image/jpeg)	Tangents from a point to a circle are the same length. ( equal tgt. )
Enter text here... Image: 5949fac3-38ba-409c-859e-b4f39087aa4d (image/jpeg)	The angle where the radius meets the tangent is 90º. ( tgt. ⊥ rad.)
Enter text here... Image: b6984316-5a04-461d-956a-bafaccbaa4b5 (image/jpeg)	The exterior angle of a cyclic quadrilateral is equal to the interior opposite angle. ( ext. ∠, cyclic quad. )
Enter text here... Image: e3344ad2-77aa-43ee-a166-4bb78cb5ec4f (image/jpeg)	Opposite angles of a cyclic quadrilateral add to 180º. ( opp. ∠'s, cyclic quad. )
Enter text here... Image: f3a1ec0e-d4d8-420e-980e-b7db49bb9022 (image/jpeg)	Angles on the same arc are equal. ( ∠'s on same arc )
Enter text here... Image: 07633f16-8b9a-491d-8792-583fd7e5d684 (image/jpeg)	The angle in a semi-circle is a right angle. ( ∠ in semi-circle )
Enter text here... Image: c6451bba-856a-4940-a3de-33bf635365b7 (image/jpeg)	The angle at the centre is twice the angle at the circumference on the same arc. ( ∠ at centre )
Enter text here... Image: 7607325d-c4e6-4674-9960-aa64ae578bc9 (image/jpeg)	Vertically Opposite angles are equal. ( Vert. pop. ∠'s )
Enter text here... Image: 47bb6c78-6c1f-435f-b38a-be791ca928ad (image/jpeg)	Corresponding angles on parallel lines are equal. ( corresp. ∠'s, // lines )
Enter text here... Image: 94270f0e-ab15-49f6-be46-0837dee67bb0 (image/jpeg)	Alternate angles on parallel lines are equal. ( alt. ∠'s, // lines )
Enter text here... Image: a37e1cad-6306-45c1-a067-108e1caa4f00 (image/jpeg)	Co-interior angles on parallel lines are equal. ( co-int. ∠'s, // lines )
Enter text here... Image: d8fa1c4e-d8e6-46bd-a6e4-c2e67857d230 (image/jpeg)	The exterior angles of a polygon add to 360°. ( ext. ∠ sum of polygon )
Enter text here... Image: 320e3f4e-feb2-46ee-9a72-2e95a1e9bc78 (image/jpeg)	A triangle is isosceles if two of its sides are formed from the radius(radii) of a circle ( isos. △, = radii )

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