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.

Back Next

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.

Quantitative Aptitude Reasoning English General Knowledge Picture Patterns
More for You
MCQ with question Explanations Scholarships and Financial Aid

Quantitative Comparison

Learn techniques how to crack quantitative comparison section

Geometry

How to solve Geometry questions on math section of the test

Subject Tests SAT GRE and NTS-GAT

All about Subject Tests like GRE, GAT, and SAT subjects

All in this Category

You may be interested in

Colleges in Islamabad

A comprehensive list of major colle ...

Colleges in cities of Khyber Pakhtoonkhwa

Comprehensive lists of colleges in ...

Study in USA

How you can get an opportunity to h ...

Study in Cyprus

How to get opportunity to study in ...

GRE Bio-Chemistry

Find what is GRE Bio-Chemistry and ...

CSS Exam

All about the preliminary requireme ...

UAF University of Agriculture

The oldest agri university is Pakis ...

Universities in KPK

A comprehensive list of universitie ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA