Tag: Exterior

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Angle Formed By Two Lines and a Transversal 

Angle Formed By Two Lines and a Transversal  In above figure line l, intersects two lines m and n at the point p and q respectively. Therefore, line l is a “Transversal” for lines m and n. Four angles are formed at the points p, by line l, name of these angles as  ∠1, ∠2, ∠3, and ∠4. Four angles are formed […]

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The angle subtended by an arc at the centre is double of the angle subtended by it at any point on the remaining part of the circle – Theorem – geometry

The angle at the centre of a circle is twice the angle at the circumference, when both are subtended by the same arc.  Given: A circle with centre at O, arc BC of this circle subtends angles ∠BOC at centre O and ∠BAC at a point A remaining part of the circle.   To Proof: ∠BOC […]

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