CBSE Class 9 - Types and Angle Sum Property Videos
Properties of quadrilateral
The video explains case study based type of question which is based on the angle sum property of a quadrilateral and perimeter of a polygon
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Types and Angle Sum Property
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Types and Angle Sum Property
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Types and Angle Sum Property
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Parallelograms: Basic Properties
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Problem solving on properties related to parallelogr ...
- each side of square field ABCD is 50 m long, length of diagonal field is (route 2 =1.414
- diagonal AC of a parallelogram ABCD bisects ?A . i . it biseets ?C also ii . ABCD is a rhombus
- Why is'nt the angle sum property true for a concave quadrilateral even when we can divide it into two triangles
- what is quadrilaterals
- Why is the angle sum property not applicable to concave quadrilateral?(please explain briefly and if possible with proof and example) Thank you.
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In a quadrilateral ABCD, the line segments bisecting
C and D meet at E. Prove that A + B = 2 CED. 
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In the given figure, PQRS is a quadrilateral in which PQ is the longest side and RS is the shortest side. Prove that
R > P. 
- The angles of a quadrilateral are in the ratio 3: 5: 9: 13. Find all the angles of the quadrilateral.
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In the given figure, LMNQ is a parallelogram in which
L = 75o and QMN = 60o. Find NQM and LQM. 
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In the figure, PQRS is a trapezium in which PQ
SR. if 
P = 55o and Q = 70o, find R andS. 
