MoM

• is the set of all points that are all the same distance from a given point in plane.
• CIRCLE - is the set of all points that are all the same distance from a given point in plane.
• • Radius: The distance from the center of the circle to its outer rim or to any point on the circle
• Chord: A line segment whose endpoints are on a circle.
• • Diameter: A chord that passes through the center of the circle. The length of a diameter is two times the length of a radius
• Secant: A line that intersects a circle in two points.
• • Tangent: A line that intersects a circle in exactly one point.
• Point of Tangency: The point where a tangent line touches the circle
• Arc: part or segment of the circumference of a circle
• Sector: made of the arc of the circle along with its two radii.
• Segment: which is cut from the circle by a "chord" (a line between two points on the circle)
• Tangent Circles: Two or more circles that intersect at one point.
• Concentric Circles: Two or more circles that have the same center, but different radii
• • Congruent Circles: Two or more circles with the same radius, but different centers.
• Semicircle - an arc measuring one-half of the circumference of a circle. ❖Minor arc - a
• ❖Semicircle - an arc measuring one-half of the circumference of a circle.
• Minor arc - an arc of a circle that measures less than a semicircle
• Major arc - an arc of a circle that measures greater than a semicircle
• ❖Central angle - an angle whose vertex is at the center of the circle and with two radii as its sides.
• ❖Inscribed angle - an angle whose vertex is on a circle and whose sides contain chords of the circle.
• the minor arc is equal to the measure of its central angle.
• the major arc is equal 360 minus the degree measure of its related minor arc
• semicircle is 180.
• inscribed angle is equal to one-half the measure of its intercepted arc
• The distance around the circle is called the circumference,
• A polygon is a closed plane figure formed by line segments. Each side must intersect exactly two others sides but only at their endpoints.
• Side/Edge – one of the line segments that make up a polygon.
• Vertex – endpoint of each side of the polygon. Adjacent vertices are endpoints of a side
• Diagonal – line segment joining two non-adjacent vertices of the polygon.
• Interior Angle – angle formed two adjacent sides inside the polygon.
• Exterior Angle – angle that is adjacent to and supplementary to an interior angle of the polygon.
• Equiangular Polygon – polygon with congruent angles.
• . Equilateral Polygon – polygon with congruent sides.
• Regular Polygon – polygon that is equiangular and equilateral at the same time
• Irregular Polygon – polygon that is neither equiangular nor equilateral
• Convex Polygon – polygon with all of its interior angles less than 180 degrees
• Concave Polygon – polygon with at least one interior angle that measures more than 180 degrees.
• Triangle is a closed figure formed by three noncollinear points connected by line segments called sides.
• Included angle is the angle subtended by two sides at the vertex of the triangle. The sum of the angles of the triangle is always equal to 180˚.
• Altitude is a line from vertex perpendicular to the opposite side