Triange inside of a circle

Triangle inside of a circle

Draw perpendicular bisectors to each side of a triangle. This way you get intersect which is center point of a circle that seals in the original triangle.

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Circle inside of a triangle

Circle inside of a triangle

Circle can be drawn inside of a triangle. Centerpoint of a circle is intersect of angle bisectors.

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Angles of a triangle

Angles of a triangle

One of the first things we learn about triangle geometry, is the sum of its angles, 180^o. This app demonstrates why is it so. Move the slider(s) to see.

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Area of Triangle

Area of a triangle

Area is calculated: 1/2 * base * height. In this applet area of a triangle is represented with blue color and it is area of a rectangle divided by 2.

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