Vocabulary
Name of lines that are not on the same plane and never intersect
Skew
Name of a triangle with 2 congruent sides.
Isoceles
What does the Triangle Sum Theorem State
All angles inside a triangle equal 180 degrees
Complementary Angles
A Triangle with 3 congruent sides
Equilateral triangle
Which property of inequality states, if a=b, then b=a
Reflexive Property
What is the point where perpendicular bisectors of the sides of a triangle intersect.
Circumcenter
What converse states, If two lines are cut by a transversal so that a pair of corresponding angles are congruent,
Corresponding Angles Converse
Vertical Angles
A Triangle with 2 equal sides.
Isosceles triangle
Two points on the same plane.
Co-planar
Classify a triangle with one right angle and 2 congruent sides
right, isoceles
What theorem states, a triangles exists only if the sum of the 2 smaller sides is larger than the 3rd side.
triangle inequality theorem
A pair of angles that are outside the two parallel lines but on either side of the transversal.
Alternate exterior Angles
A triangle with no sides that are equal.
Scalene
The name of a line that intersects two or more lines.
Transversal
What are 4 Congruence theorems that you can use to prove triangles congruent?
SSS. SAS, HL, AAS
What theorem states, If a point lies on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
Perpendicular Bisector Theorem
The angles which occupy the same relative position at each intersection where a straight line crosses two others.
Corresponding Angles
A triangle with one right angle and two equal sides is what kind of triangle( two classifications)
Right, isosceles
What property states, if two lines are parallel to the same line, then they are parallel
Transitive property
What does CPCTC stand for?
Congruent Parts of Congruent triangles are Congruent
What theorem states, If 2 sides of a triangle are congruent, then the opposite angles are congruent
Isosceles Triangle Theorem
The angles formed when a transversal intersects two coplanar lines. They lie on the inner side of the parallel lines but on the opposite sides of the transversal,
Alternate Interior Angles
A triangle with all 3 sides being equal also has to be _____
Equilangular