U3 Geometry Flashcards
revolution
360° angle
Stright Angle
180° angle
right angle
90° angle
acute angle
less than 90° angle
obtuse angle
between 90° and 180° angle
reflex angle
between 180° and 260° angle
Corresponding angle pairs
the same angle
alternate angle pairs
alternating angles
co-interior angle pairs
same side both inside
Congruence Postulates
SSS ASA SAS AAS Hypotenuse-Leg
reflexive property
when two triangles share a common side or angle
vertically opposite angle
the angles opposite each other when two lines cross are always congruent
Linear Pair
congruent if one is given as a right angle
Definition of Midpoint
D is the midpoint of AC, therefore AD ≌ CD
exterior angle
the exterior angle is equal to the sum of the two opposite interior angles
Similar triangle postulates
AA SAS SSS
Areas of Similar Shapes
squared
volume of Similar Shapes
cubed