For any triangle, a perfect circle can be drawn whose outside edge lies along all three points. The center of that circle is called the circumcenter of the triangle, and it can be found where the perpendicular bisectors of the triangle's sides intersect. You need a protractor, a straight-edge and a compass to find the circumcenter.Know More
If you were given coordinates for your triangle, mark those on a grid and draw lines between the points. If you were given a combination of lines and/or angles, draw the triangle using a compass to find the intersections of known line lengths with unknown angles of intersection.
To bisect a line segment, find its halfway point. Divide the length of the line segment by two and measure that distance. Mark the point. Do this for all three sides.
A perpendicular line forms a right angle. Use the 90-degree mark on your protractor to find the trajectory of the perpendicular lines, each starting from a bisecting point. Make a light mark at 90 degrees to guide your bisecting lines. Draw the lines using a straight-edge tool. The point at which they intersect is the circumcenter. It can be inside or outside of the triangle. To check your answer, see that the circumcenter is an equal distance between each of the triangle's points.
The formula z = sqrt (x^2 + y^2) is an equation for solving for one side of a right triangle if the other two sides are known. It is derived from the Pythagorean theorem, z^2 = x^2 + y^2, by taking the square root of both sides of the equation.Full Answer >
The Pythagorean theorem states that when a triangle has a right angle and all three sides are squared, the longest side squared will equal the size of the smaller two sides squared and summed. It is usually expressed as a^2+b^2=c^2.Full Answer >
The general equation of a circle in the Cartesian coordinate system is (x-a)2 + (y-b)2 = r2. The point (a,b) represents the center of the circle and the value of r represents the radius of the circle.Full Answer >
According to Math Open Reference, pi is a mathematical constant obtained by dividing the circumference of any circle by its diameter. Pi is about 22/7 or 3.142. However, no one knows its exact value.Full Answer >