Lesson: Geometry - 19t01

Finding The Perimeter Of A Triangle

[Page 19 of 30]

What is the perimeter of the isosceles triangle in the diagram below? Choose an answer, and then click Continue.

4√2
6√2
12
8 + 4 √2
14

Countinue

The largest angle in a right triangle is always the right angle. This makes sense if we remember that the sum of the other two angles is 180° - 90° = 90°. This is an isosceles triangle, the other two angles must be equal, and each must be 45°.

Since sides are proportional to the angles that are opposite them, then the two legs of the triangle must be of equal length. We know that one leg is 4, so the other leg must also be 4.

Plug these numbers into the Pythagorean theorem to find the length of the hypotenuse:

Then add the sides to find the perimeter:

4 + 4 + 4√2 = 8 + 4√2

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

Geometry

How to solve Geometry questions on math section of the test

Quantitative Comparison

Learn techniques how to crack quantitative comparison section

ISSB - Group Discussion

How to perform well on ISSB - Group Discussion

All in this Category

You may be interested in

MA Jinnah Group Of Colleges - Faisalabad

A big name in colleges in Faisalaba ...

College Of Excellence For Girls - Hydrabad

A popular name in colleges of Hydra ...

Study in India

Have an opportunity to study in an ...

Social Articles

A list of Articles on Social Issues ...

SAT-Subject Chemistry

Lessons and practice questions of S ...

ISSB Tests

How to deal with ISSB Recruitment t ...

FAST - Engineering degrees

FAST Bachelor in Engineering degree ...

NUST Engineering

National University of Science and ...

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