- A portion of a line that starts at a point and continues forever in one direction. Lines that intersect at right angles. G A specific location, it has no dimension and is represented by a dot. Lines that lie in the same plane and do not intersect perpendicular lines angle C line segment parallel linesH circle point B line ray x B C E F H A F A ...
- Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Calculators may be used. Information The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question.

- This calculator can find the center and radius of a circle given its equation in standard or general form. The calculator will generate a step by step explanations and circle graph.
- Lengths of Arcs. The measure of an arc is given in degrees. The length of an arc depends on the size of the circle and is measured in standard units, such as inches, centimeters, etc. The circumference of a circle is an arc measuring 360 o. The length of the circumference is given by the formula: C = πd, where d is the diameter of the circle.

- Special Note: Perpendicularity in GD&T can mean two very different things depending on which reference feature is called out. The normal form or Surface Perpendicularity is a tolerance that controls Perpendicularity between two 90° surfaces, or features.
- The longest chord of a circle is called diameter. It can be also defined as the line segment that passes through the center of the circle and touches both the ends of the circumference of the circle. Diametrically Opposed. Two points directly opposite to each other on a circle. Difference. The result of subtracting two numbers is called difference.
- 5,300 video lessons by expert teachers. 5,300 video lessons cover pre-algebra, algebra, geometry, algebra 2, trigonometry, precalculus, calculus in math, chemistry ...