Q. 1465.0( 4 Votes )

# In parallelogram ABCD, find∠ B, ∠C and ∠D.

Answer :

Given, ∠A = 80

⟹The sum of the adjacent angles of a parallelogram is 180

Hence, ∠A + ∠B = 180

∠B = 180-80

∠B = 100

⟹The opposite angles of a parallelogram are equal.

Hence, ∠C = ∠A = 80

And, ∠D = ∠B = 100

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

Related Videos

Genius Quiz | Understanding Quadrilaterals20 mins

Quiz | Polygon & their Properties46 mins

Members of Quadrilaterals65 mins

Quadrilaterals32 mins

Understanding Scalar and Vector Quantities56 mins

NCERT | Understanding Important Laws49 mins

Champ Quiz | Polygons (Quadrilaterals)30 mins

Champ Quiz | Cell44 mins

Understanding Quadrilateral43 mins

Rectangles, Squares and Kites30 mins

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Expertsview all courses

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

RELATED QUESTIONS :

The angle between the altitudes of a parallelogram, through the same vertex of an obtuse angle of the parallelogram is 60°. Find the angles of the parallelogram.

RD Sharma - MathematicsThe angle between the two altitudes of a parallelogram through the same vertex of an obtuse angle of the parallelogram is 30°. The measure of the obtuse angle is

NCERT - Mathematics Exemplar