Loading...

Lesson: Geometry - 23

Parallelograms

[Page 23 of 30]

A parallelogram is a quadrilateral that has two pairs of parallel sides. The opposite angles are congruent. The diagonals bisect each other.

A parallelogram is a quadrilateral with:

  • Opposite sides parallel
  • Opposite angles equal

These two properties go together: if the opposite angles are equal, the opposite sides will be parallel, and vice versa.

Adjacent angles of a parallelogram are supplementary.

ADC = ∠ ABC

Since quadrilateral ABCD has opposite angles that are equal, it is a parallelogram. That means that AD is parallel to BC, AB is parallel to DC, and ∠DAB = ∠DCB.

Next to display next topic in the chapter.

Test Prep Lessons With Video Lessons and Explained MCQ

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

More for You
All in this Category

You may be interested in

Colleges in Peshawar

Find a comprehensive list of major ...

PAF College Sargodha

Admission detail for admission in P ...

Test-Preparation Articles

Acquire the most effective Test Pre ...

USA Study Visa

How to get USA Study Visa and what ...

ISSB Direction Sens Questions

Learn about ISSB Direction Sens Que ...

PPSC Exam for Posts of Inspector Legal

Learn about PPSC Exam for Posts of ...

PU University of the Punjab

The oldest university in Pakistan - ...

COMSATS - Engineering

COMSAT degrees in engineering - the ...