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Ch. 5 Math Vocabulary - 2
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The sum of the angles in EVERY triangle is 180 degrees
Triangle Sum Theorem
Triangle has 3 acute angles
Acute
Triangle that has 2 acute angles and 1 obtuse angle
Obtuse
Triangle that has 2 angles and 1 right angle
Right
Triangle that has 3 congruent sides
Equilateral
Triangle that has 2 congruent sides
Isosceles
Triangle that has NO congruent sides
Scalene
The sum of the lengths of any 2 sides of a triangle must be greater than the length of the 3rd side
Triangle Inequality Theorem
Lines in a plane that never intersect are called
Parallel lines
Lines in a plane that form right angles when they intersect are called
Perpendicular lines
A line that passes through 2 or more lines
Transversal
For two lines intersected by a transversal, a pair of angles that lie on the same side of the transversal and on the same sides of the other two lines
Corresponding angles
For two lines intersected by a transversal, a pair of angles that lie on opposite sides of the transversal and outside the other two lines
Alternate exterior angles
For two lines intersected by a transversal, a pair of nonadjacent angles that lie on opposite sides of the transversal and between the other two lines
Alternate interior angles
Author:
BJHS
ID:
336418
Card Set:
Ch. 5 Math Vocabulary - 2
Updated:
2017-12-05 19:22:23
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Angles Triangles
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Ch. 5 Math Vocabulary - 2
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