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

Jobs in Pakistan Induction process Test Prep Sections Practice MCQs Admission Tests Test Sections Success on Tests Study in USA Pak Universities Employment ISSB Preliminaries Articles and Essays Schools & Colleges Study Abroad Career News

Arithmetic Geometry Data Interpretation Problem Solving Data Sufficiency Quant. Comparison

English Vocabulary English Correction Antonyms Synonyms Analogies Fill in the Blanks Critical Reading Text Completion

Number Series Picture Pattern Critical Reasoning Analytical Reasoning

Writing

Physics Chemistry Biology Mathematics Pak Penal Code Islamic Hudood Laws

Geometry Strategies Basic Lessons Intermediate Lessons Challenging Lessons Finding Degree Measurements Angles Vertical Angles Angles Terms And Rules Alternate Angles and Tranversal Triangles Triangles Lengths of Sides Triangles Side-Angle Relationship Popular Pythagorean Ratios Triangles Area Using Ratios Perimeter of Triangle 30-60-90 Triangles Rectangles Quadrilaterals Parallelograms Squares Areas Of Quadrilaterals Areas Of Rectangles And Squares Basics Next Steps Degree 45, degree 90,degree Isosceles Triangle

MCQ with question Explanations Scholarships and Financial Aid

Lesson: Geometry - 19t01

Finding The Perimeter Of A Triangle

Test Prep Lessons With Video Lessons and Explained MCQ

Current Menu

More for You

Quantitative Comparison

Geometry

Join PAF as GD Pilot

You may be interested in

Colleges in Dera ismail khan

Superior College Of Science - Hydrabad

CSS and PMS Essays

Test-Preparation Articles

GRE Physics

SAT-Subject Physics

Universities in Peshawar

BUET - BSc Engineering

About us

Quick Test Prep

Study Abroad

Lesson: Geometry - 19t01

Finding The Perimeter Of A Triangle

Test Prep Lessons With Video Lessons and Explained MCQ

Current Menu

Main Menu (Click/Tap to Open)

Current Menu

Quantitative

Verbal

Logical/Reasoning

Writing

Subjects

Geometry

More for You

Quantitative Comparison

Geometry

Join PAF as GD Pilot

You may be interested in

About us

Quick Test Prep

Study Abroad