YouTube on MSNOpinion

Given two congruent arcs, determine the value of your central angle

Learn how to solve problems with arcs of a circle. An arc is a curve made by two points on the circumference of a circle. The ...
YouTube on MSNOpinion

Given two congruent chords, determine the measure of x for an arc

Learn how to solve problems with arcs of a circle. An arc is a curve made by two points on the circumference of a circle. The ...
ACHR News

Math for the Technician: Using Shapes and Angles

A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...
BBC

Drawing and measuring angles

A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...