Studied by 1 personStraight Angle
Two rays extend in exactly two opposite directions and share a common endpoint (the center)
Linear Pair
The two angles created if two angles share a vertex and together make a straight angle
Supplementary angles
The sum of two angles that equal 180 degrees
Complementary angles
Add up to 90 degrees
Altitude
is a line segment drawn from a vertex perpendicular to the opposite side (or an extension of the opposite side).
Median
is a line segment drawn from a vertex to the midpoint of the opposite side.
Angle bisector
is a line segment or ray drawn from vertex that cuts the angle in half.
Perpendicular bisector of a side
is a line drawn perpendicular to a side of the triangle through its midpoint.
SSS
Congruent
SAS
Congruent
ASA
Congruent
AAS
Not Congruent
HL
Congruent
AAA
Not Congruent
SSA
Not Congruent
What is the sum of the angles in a triangle?
180 degrees
Points along the perpendicular bisector are equidistant from the endpoints of the segment. (Type Ok)
Ok
quaderlateral
4 sided polygon
Square (Type Ok)
Ok
Rhombus (Type Ok)
Ok
Parallelogram (Type Ok)
Ok
Isosceles Trapezoid (Type Ok)
Ok
Trapezoid
No sides are congruent
Equilateral Triangle
All sides are congruent
Isosceles triangle
2 sides are congruent
Scalene triangle
No sides are congruent
Vertical Angles
the opposite angles formed at the point of intersection.
Exterior Angles of a Triangle
the angle formed on the exterior of the triangle is called an exterior angle.
Remote interior angles
the two angles of the triangle that are not adjacent to the exterior angle
Transversal line
a line that intersects two or more other lines.
Note
Flashcard