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Recall that in a scalene triangle, all the sides have different lengths and all the interior angles have different measures. In such a triangle, the shortest side is always opposite the smallest angle. (These are shown in bold color above) Similarly, the longest side is opposite the largest angle.
- Incenter of a Triangle
The incenter is the center of the triangle's incircle, the...
- Centroid of a Triangle
Once you have found the point at which it will balance, that...
- Triangle Altitudes
A triangle therefore has three possible altitudes. The...
- Circumcenter of a Triangle
One of several centers the triangle can have, the...
- Triangle Incircle
Incenter: The location of the center of the incircle. The...
- Area of a Triangle
a and b are the lengths of two sides of the triangle C is...
- Triangle Midsegment
Definition and properties of the midsegment of a triangle....
- Triangle Circumcircle
For equilateral triangles In the case of an equilateral...
- Incenter of a Triangle
No matter how you position the three sides of the triangle, the total degrees of all interior angles (the three angles inside the triangle) is always 180°. This property of a triangle's interior angles is simply a specific example of the general rule for any polygon's interior angles.
- Equilateral, Isosceles and Scalene
- Play with It ...
- Area
There are three special names given to triangles that tell how many sides (or angles) are equal. There can be 3, 2 or noequal sides/angles: How to remember?Alphabetically they go 3, 2, none: 1. Equilateral: "equal"-lateral (lateral means side) so they have all equal sides 2. Isosceles: means "equal legs", and we have two legs, right? Also iSOSceles...
Try dragging the points around and make different triangles: You might also like to play with the Interactive Triangle.
The area is half of the base times height. 1. "b" is the distance along the base 2. "h" is the height (measured at right angles to the base) Area = ½ × b × h The formula works for all triangles. Note: a simpler way of writing the formula is bh/2 The base can be any side, Just be sure the "height" is measured at right angles to the "base": (Note: Yo...
A triangle whose sides are all the same length is an equilateral triangle, [3] a triangle with two sides having the same length is an isosceles triangle, [4][a] and a triangle with three different-length sides is a scalene triangle. [7]
Learn Practice Download. Classifying Triangles. Classification of triangles is done according to the length of their sides and the measure of the angles. A triangle is a simple polygon with 3 sides, 3 interior angles, and 3 vertices that are joined with each other and it is denoted by the symbol .
Jul 5, 2024 · “Equi” refers to equal and “lateral” refers to the side lengths, so equilateral triangles are triangles that have three sides with the same length. Because their side lengths are all congruent, their interior angles are also congruent. They’re also known as equiangular triangles, because their interior angles are all the same.
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All three sides of an equilateral triangle are the same length. The word equilateral means equal lines. Each angle is the same size. Each angle is 60°.
