Most of what you’ll need to know about lines and angles on the ACT is how to identify when and how they will be equal or supplementary to one another.Įqual angles (or lines) are angles (or lines) that have the same measurement. The measure of how they meet is expressed in degrees, and the point at which they intersect is called the angle’s “vertex.” Perpendicular lines meet each other at 90 degree angles.Īn angle is the meeting of two lines. They travel in the same direction continuously. Parallel lines are two or more lines that are a set distance apart (equidistant) and never meet. It can either have termination points (and will be called a “line segment”) or go on infinitely. This will be your complete guide to lines and angles on the ACT-what they are, how you’ll see them on the test, and how to solve these types of questions to maximize your points on test day.īefore we get into how lines and angles function, let’s define our terms.Ī line is a completely straight marker, meaning it has no curvature. Though it is rare to see a pure line and angle problem (without the addition of other geometric shapes), you’ll need to know just how lines and angles work and how to solve for all your missing measures before you can take on those more complex problems. ![]() This is most certainly the case for line and angle problems. ![]() There are several math topics that act as foundations for understanding ACT Math, even though there are not many questions specifically dedicated to the topic.
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