Types of triangles | Constructible polygons

Equilateral triangle

In geometry, an equilateral triangle is a triangle in which all three sides have the same length. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°. It is also a regular polygon, so it is also referred to as a regular triangle. (Wikipedia).

Equilateral triangle
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How To Construct An Equilateral Triangle

Complete videos list: http://mathispower4u.yolasite.com/ This video will show how to construct an equilateral triangle with a compass and straight edge.

From playlist Triangles and Congruence

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Equilateral Triangle / Equiangular Triangle

I introduce and define equilateral triangles and equiangular triangles. I then work through 3 examples involving the lengths of sides and angles. EXAMPLES AT 2:55 8:14 15:52 Find free review test, useful notes and more at http://www.mathplane.com If you'd like to make a donation to suppo

From playlist Geometry

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How do you find all of the sides for a equilateral triangle

👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A

From playlist Triangles

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What is an equilateral triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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What is an equiangular triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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How to find the measure of each side of an equilateral triangle

👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A

From playlist Triangles

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How to determine all of the measure of angles for an equilateral triangle

👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A

From playlist Triangles

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Find the measure for the sides of an equilateral triangle

👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A

From playlist Triangles

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Constructing the Circumcircle of an Equilateral Triangle

This video shows how to construct the circumcircle of an equilateral triangle. The steps are: 1. Construct an equilateral triangle (keep the compass the same length). 2. Construct the perpendicular bisector of any two sides. 3. Set the compass to the length of the circumcenter (created

From playlist Geometry

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Proof by Strong Induction [Discrete Math Class]

This video is not like my normal uploads. This is a supplemental video from one of my courses that I made in case students had to quarantine. In this video, we discuss the principle of strong induction: what it is for, why it works, and how to go about using the technique. We compare the t

From playlist Discrete Mathematics Course

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Geometric Properties of an Equilateral Triangle

This lecture explores a few geometric properties of equilateral triangles, such as proving that the altitude splits an equilateral triangle into two congruent triangles. Further, the altitude, median, and angle bisector are shown to be the same. Finally, the altitude is used to derive a 30

From playlist Geometry

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Proof: The Equilateral Triangle Theorem

Complete videos list: http://mathispower4u.yolasite.com/ This video provides a two column proof of the equilateral triangle theorem.

From playlist Triangles and Congruence

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Solve the Hardest GCSE Question from Maths 2022 Paper 1 [Math Mini]

Several people reached out asking me to solve this question, taken from the recent GCSE Edexcel Maths Paper 1 test. As an American, my understanding of this exam is limited, but it seems roughly like an SAT or ACT, which tells me that this question is quite a bit above the typical difficul

From playlist Math Mini

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Just the Tips: An Intriguing Distance Problem

Today, we are truly going the distance. Patreon: https://www.patreon.com/whatthehectogon Amazon Affiliate Link: https://amzn.to/2GklBC4 Instagram: https://www.instagram.com/whatthehectogon/ Doggo: https://www.instagram.com/fluffy.gus/ Email: whatthehectagon@gmail.com

From playlist Trigonometry

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Area of an Equilateral Triangle (GMAT/GRE/CAT/Bank PO/SSC CGL) | Don't Memorise

The formula for the Area of an Equilateral Triangle explained. To access all videos related to Geometry, enroll in our full course now: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM&utm_content=9ep48wATy7s&utm_term=%7Bkeyword%7D In this vide

From playlist Geometry (GMAT /GRE / CAT / Bank PO / SSC CGL)

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Triangle within a Circle ( GMAT / GRE / CAT / Bank PO / SSC CGL)

An example based on a Triangle within a Circle. In this video, we will learn: 0:00 Introduction - Triangle within a Circle 0:24 Centre of the circle & triangle 1:29 Relation between the radius of the circle and the side of the equilateral triangle 3:08 Find based on ratio of the radius

From playlist Geometry (GMAT /GRE / CAT / Bank PO / SSC CGL)

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A Japanese Temple Geometry Problem from 1800.

We look at a nice geometry problem involving equilateral triangles inscribed in a circle. Playlist: https://youtube.com/playlist?list=PL22w63XsKjqyZZAicSHbpVhJzLPfPMJf6 Please Subscribe: https://www.youtube.com/michaelpennmath?sub_confirmation=1 Merch: https://teespring.com/stores/micha

From playlist Geometry

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Equilateral Triangle to 30-60-90 Triangle: Dynamic Illustration without Words

GeoGebra Resource Link: https://www.geogebra.org/m/wfAJDwKf

From playlist Geometry: Dynamic Interactives!

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List of triangle inequalities | Equiangular polygon | Congruence (geometry) | Euclidean geometry | If and only if | Perimeter | Van Schooten's theorem | Nagel point | Angle | Platonic solid | Heronian triangle | Trigonometry | Parallel (geometry) | Incircle and excircles of a triangle | Isoperimetric inequality | Euler line | Pythagorean theorem | Triangle center | Apothem | Euclidean tilings by convex regular polygons | Integer triangle | Angle trisection | Euler's theorem in geometry | Nine-point circle | Circumscribed circle | Isosceles triangle | Median (geometry) | Rhombitrihexagonal tiling | Star polygon | Tetrahedron | Rotational symmetry | Complex plane | Icosahedron | Euclid's Elements | Symmetry group | Square | Napoleon's theorem | Trihexagonal tiling | Altitude (triangle) | Morley's trisector theorem | Steiner inellipse | Reflection symmetry | Hexagonal tiling | Erdős–Mordell inequality | Vesica piscis | Dihedral group of order 6 | Barrow's inequality | Trilinear coordinates | Bisection | Heptagonal triangle | Viviani's theorem | Area | Snub square tiling | Cevian | Pompeiu's theorem | Octahedron | Geometry | Regular polygon | Triangle | Antiprism | Centroid | Truncated hexagonal tiling | Semiperimeter | Weitzenböck's inequality | Triangle inequality | Optic equation