Geometry reasons

Description

Flashcards on Geometry reasons, created by selwang on 16/05/2016.
selwang
Flashcards by selwang, updated more than 1 year ago
selwang
Created by selwang over 8 years ago
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Question Answer
Enter text here... The angle between a chord and a tangent equals the angle in the alternate (opposite) segment. ( ∠ in alt. seg. )
Enter text here... The perpendicular from the centre to the chord bisects the chord. ( ⊥ from centre to chord )
Enter text here... Tangents from a point to a circle are the same length. ( equal tgt. )
Enter text here... The angle where the radius meets the tangent is 90º. ( tgt. ⊥ rad.)
Enter text here... The exterior angle of a cyclic quadrilateral is equal to the interior opposite angle. ( ext. ∠, cyclic quad. )
Enter text here... Opposite angles of a cyclic quadrilateral add to 180º. ( opp. ∠'s, cyclic quad. )
Enter text here... Angles on the same arc are equal. ( ∠'s on same arc )
Enter text here... The angle in a semi-circle is a right angle. ( ∠ in semi-circle )
Enter text here... The angle at the centre is twice the angle at the circumference on the same arc. ( ∠ at centre )
Enter text here... Vertically Opposite angles are equal. ( Vert. pop. ∠'s )
Enter text here... Corresponding angles on parallel lines are equal. ( corresp. ∠'s, // lines )
Enter text here... Alternate angles on parallel lines are equal. ( alt. ∠'s, // lines )
Enter text here... Co-interior angles on parallel lines are equal. ( co-int. ∠'s, // lines )
Enter text here... The exterior angles of a polygon add to 360°. ( ext. ∠ sum of polygon )
Enter text here... A triangle is isosceles if two of its sides are formed from the radius(radii) of a circle ( isos. △, = radii )
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