IIII ? - B tcdsb.elearningontario.ca Unit5 Quiz Knowledge 1. Com-late the table below for Ke Geomet Concerts, b llin- in the blanks. A circle is a set of points that are a from a given point, the centre. The of a circle is a chord passing through the circles centre. A chord is a inside a circle that joins two points on the of the circle. A is a chord that passes through the centre of the circle. The further the chord is from the the shorter its length. Chords that are equidistant from the centre are in length. Any line from the circle's to the chords midpoint is perpendicular to the chord. It is called a An is a section of the circumference of a circle that joins two points on the circle. The length of any will be a fraction of the circumference. A tangent to a circle is a line segment that the circle at point. A secant to a circle is a line segment that the circle at points. A tangent to a circle is to the radius at the paint of tangency. Tangent segments are ' when drawn from a point outside the circle. is an angle in a circle with its vertex on the circle. Any on the diameter is 90. A central angle is formed by two of a circle. A central angle is always the measure of an inscribed angle subtended from the same arc, or chord. A sector is the area enclosed by two of a circle and the that connects the endpoints of the . The of a sector will be a fraction of the circle's area. The area of a sector is related the length of the arc subtending the sector. Equal chords subtend equal angles and equal angles. if two inscribed angles are an the same chord and are an the of the chord, the angles are equal. A segment is formed between a and a . , which show an object unfolded, can be used to help visualize the faces of a 3D object. This assists when determining of the object, since it is the sum of the areas of all faces on the object. For prisms and cylinders, the volume can be found by multiplying the by the . it is important to make sure all measurements are in the before calculating area, volume, perimeter; or surface area. The imperial system uses , and for length. The metric system uses units based on multiples of . For example live will equal or Thinking and Communication 0