In Fig.8.2, ABCD and AEFG are two parallelograms. If ∠C = 55º, determine ∠F.

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TextOpposite Angles of Parallelogram are EqualNCERT Exemplar

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If an angle of a parallelogram is two thirds of its adjacent angle, the smallest angle of the parallelogram is

If measure of opposite angles of a parallelogram are (60 − x)° & (3x − 4)°, find the measures of angles of the parallelogram.

Opposite Angles of Parallelogram are Equal

Conditions for Quadrilateral to be Parallelogram

Mid-point Theorem for Triangle

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M,N & P are the mid-points of sides AB, AC & BC of a △ ABC respectively. If MN= 3 cm, NP= 3.5 cm and MP= 2.5 cm, calculate BC, AB & AC respectively.

In fig ABCD is a parallelogram. If ∠DAB = 60° and ∠DBC = 80° then ∠CDB is

In Fig.8.4, AX and CY are respectively the bisectors of the opposite angles A and C of a parallelogram ABCD. Show that AX || CY.