Geometry FINAL TERMS

• point: a location in space
• line: connected points that continue ♾️ in both directions
• plane: is a flat surface that continues ♾️ in all directions
• 2 lines intersect at a point
• a line and one plane intersect at a point
• 2 planes intersect at a line
• collinear = points on the same straight line
• coplanar = points on the same plane
• line segment: a line with two end points, "measurable"
• segment addition postulate = part + part = whole
• congruent: same measure
• mid point: "average," segment bisector
• ray: a line with a start point
• angle: opening created by intersection of lines, rays, segments, etc.
• angles less than 90° = acute
• angles equal to 90° = right
• angles greater than 90° = obtuse
• an 180° angle = straight
• adjacent angles share a wall and a vertex
• linear pair angles are adjacent and add up to 180°
• vertical angles share a vertex, sides, and are congruent.
• complementary angles = two angles whose sum is 90°
• supplementary angles = 2 angles whose sum is 180°
• transversal: a line that cuts through at least 2 other lines
• parallel: same distance apart at all times, same slope
• parallel lines have the same slopes
• the slopes of perpendicular lines are negative reciprocals
• slope intercept form: y=mx+b
• scalene triangles: none of the slides are equal
• isosceles triangles: 2 sides are equal
• equilateral triangles: all the slides are equal, same triangle as an equiangular triangle
• biggest angles are opposite the biggest side
• sum of all interior angles of any triangle add up to 180°
• an exterior angle is always equal to the sum of the two opposite interior angles
• all corresponding sides are equal in measure
• all corresponding angles are equal in measure
• reflection : mirror
• translation : slide
• rotation : rotate
• 360° = sum of interior angles of quadrilateral