Right Angle - two lines that create a 90 degree angle. They interesect perpendicularly., Perpendicular Lines - Lines that intersect in such a way that they form a 90 degree angle., Complementary Angles - angles whose sum is 90 degrees. , Supplementary Angles - angles whose sum is 180 degrees., Parallel - Lines that never intersect as they flow in the same direction., Vertex - the point where two lines intersect forming an angle, Conjecture - make a mathematical statement using inferences., Adjacent Angles - angles next to each other. , Vertical Angles - Angles opposite each other. They are congruent., Alternating Interior Angles - angles inside the parallel lines and across the transversal.They are congruent. , Same Side Interior Angles - angles inside the parallel; they are supplementary., Corresponding Angles - Angles in the same position in relationship to the transversal., Exterior Angle Theorem - Every exterior angle of a triangle is congruent to the sum of the interior angles opposite the exterior angle.,

Pythagorean Theorem & Applications

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