Created by Jadéjah Robinson
about 9 years ago


Question  Answer 
Skew  Two or more lines that do not lie in the same plane. They are not parallel and do not intersect. 
Collinear  Points on a single line 
Coplanar  Points that share the same plane 
Linear Pairs  2 adjacent angles whose noncommon sides are opposite rays (supplementary) 
Perpendicular Bisector  A line that meets the midpoint of another line, forming a right angle 
Transversal  A line that intersects 2 or more lines in a plane at different points 
Congruent or Supplementary? Corresponding Angles  Congruent 
Congruent or Supplementary? Consecutive Exterior Angles  Supplementary 
Congruent or Supplementary? Alternate Interior Angles  Congruent 
Congruent or Supplementary? Alternate Exterior Angles  Congruent 
Congruent or Supplementary? Consecutive Interior Angles  Supplementary 
When the third angle on an isosceles triangle is a right angle, it is called a ____________________  Right Isosceles Triangle 
A line segment joining a vertex to the midpoint of the opposite side. A triangle has three of these.  Median 
The point where the three medians of the triangle intersect. "The center of gravity" of the triangle.  Centroid 
A line segment joining the midpoints of two sides of a triangle. A triangle has three of these.  Midsegment 
A midsegment is parallel to the third side and _______ its length.  half 
The segment joining the centroid and the midpoint is __________ of the length of the median.  onethird 
When two triangles have corresponding angles that are congruent, the triangles are similar.  AA (AngleAngle) Similarity 
When two triangles have corresponding angles that are congruent and corresponding sides with identical ratios, the triangles are similar.  SAS (SideAngleSide) Similarity 
The Pyhagorean Theroem can only be used with _______ triangles.  rightangled 
SSS  If the three sides of the triangle are congruent to three sides of another triangle, the the triangles are congruent. 
SAS  If two sides and the INCLUDED ANGLE of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent 
ASA  If two angles and the INCLUDED SIDE of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. 
AAS  If two triangles and a NONINCLUDED side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. 
CPCTC  Corresponding parts of congruent triangles are congrent 
What are these figures?  Rays 
What are these lines called?  Skew Lines 
What are these figures?  Line Segments 
What are <2 and <4 referred to as?  Vertical Angles 
What are the three lines pictured in the triangle?  Midsegments of a triangle 
What proof of similar triangles is pictured?  AA Theorem (AngleAngle) 
What proof of congruent triangles is shown here?  SSS Theorem (SideSide) 
What proof of congruent triangles is pictured?  SAS Theorem (SideAngleSide) 
What proof of congruent traingles is pictured below?  ASA Theorem (AngleSideAngle) 
Is this a proper proof of congruent triangles? If so, which one?  Yes, AAS Theorem (AngleAngleSide) 
Determine what relation <2 has with <6.  They are Corresponding Angles 
Two angles that lie between parallel lines on the same side of the transversal.  Consecutive Interior Angles 
Name the relationship between <2 and <8  They are Consecutive Exterior Angles 
Want to create your own Flashcards for free with GoConqr? Learn more.