Cheatography

# Geometry Midterm Cheat Sheet (DRAFT) by laurenaread

This is a draft cheat sheet. It is a work in progress and is not finished yet.

### VOCAB

 Segment Part of a line consisting of two end points and the points between them Ray Part of a line consisting of an end point and all the points to one side Parallel Lines Coplaner lines that do not intersect Skew Lines Non-co­­planer lines that do not intersect Parallel Planes Planes that do not intersect Midpoint Point on a segment that divides a segment into 2 congruent segments Acute Angle Greater than 0 and less than 90 Right angle 90 degree angle Obtuse angle Angle greater than 90 but less than 180 Congruent angles Angles with the same measure Vertical angles Opposite angles formed by inters­­ecting lines Comple­­me­ntary angles 2 angles that add up to 90 degrees Supple­­mentry angles 2 angles that add up to 180 degrees Transv­­ersal A line that intersects 2 or more coplaner lines at distinct points Acute Triangle All angles are acute Right Triangle One right angle Obtuse Triangle One obtuse angle Equala­­teral Triangle All sides are congruent Isosceles Triangle 2 congruent sides Scalene Triangle No congruent sides Circum­­center The point of concur­­rency of the perpen­­di­cular bisectors of a triangle Altitude Height of a triangle Centroid Point of concur­­rency of the medians; always lies within the triangle Quadri­­la­teral Polygon with 4 sides Equidi­stant Exact same distance
Don't kill me if one of these are wrong, I just have what Mrs. Craig taught us.

### Other things you "­nee­d" to know

 Congruence Statements ASA, SAS, SSS, AAS, HL Pythag­orean Theorem FOR RIGHT TRIANGLES ONLY Theorem 1 Parallel lines are always the same distance apart Theorem 2 If parallel lines cut one transv­ersal into equal parts, it cuts any transv­ersal into equal parts