Mastering the Basics: A Guide to CK-12 Basic Geometry (Volume 1)
Once you understand lines, you can look at pieces of them. The curriculum introduces and the concept of distance . You’ll learn the Segment Addition Postulate , which simply states that if you have a line segment with a point in the middle, the two smaller parts add up to the whole. CK-12 Basic Geometry, Volume 1 of 2
The focus then shifts to . You will learn to measure them using degrees and classify them as acute, right, obtuse, or straight. This section also introduces angle pairs , such as: Complementary: Angles that add up to 90°. Supplementary: Angles that add up to 180°. Mastering the Basics: A Guide to CK-12 Basic