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# Geometry Unit 7 ecot

### 8th grade Unit 7 Lesson 1

Line a series of points that are straight and extends forever in opposite directions
Geometry is the mathematical study of space
point is a specific location inside a plane
ray has a starting point, then extends forever one direction
segment is part of a line between two points on that line
angle When two rays share the same endpoint, an ______ is created.
vertex This shared endpoint is called the ________ of the angle.
degrees angles are measured in these.
A right angle measures 90 degrees
An acute angle measures less than 90 degrees
An obtuse angle measures greater than 90 degrees and less than 180
Complementary angles are two angles that have measures that add to 90°
Supplementary angles are two angles that have measures that add to 180°
Created by: amyshirey