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8-Angles Unit 7

7.1- Angle Relationships

TermDefinition
perpendicular lines when two lines intersect to form a right angle
parallel lines when two lines never intersect
transveral a line that intersects two or more other lines
interior angles angles located between parallel lines cut by a transversal
exterior angles angles located outside parallel lines cut by a transversal
alternate interior angles interior angles with the same measurement
alternate exterior angles exterior angles with the same measurement
corresponding angles two angles that are in the same position on the parallel lines in relation to the transversal
supplementary angles two angles that make a straight line and the sum equals 180 degrees
vertical angles Angles that are across from each other and do not share a side.
line segment part of a line containing two endpoints and all of the points between them.
vertex the point where line segments intersect
triangle shape formed by three line segments that intersect at their endpoints
interior angles (triangle) all three angles inside the triangle - the sum of all the angles equals 180 degrees
exterior angles (triangle) angle formed by one side of the triangle and the extension of the adjacent side
right triangle a triangle with a 90 degree angle
legs the sides that form the right angle of a right triangle
hypotenues the side of a right triangle that is opposite the right angle, it is the longest side of a right triangle.
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