Formulas
General Properties/Postulates
Triangles
Parallels
Polygons
100
y1 - y2 / x1 - x2
What is slope formula?
100
A quantity is congruent (equal) to itself. a = a
What is reflexive property/postulate?
100
If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.
What is SSS Congruence Postulate?
100
If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.
What is corresponding angles postulate?
100
(n-2)180
What is Polygon Interior Angle Sum Theorem?
200
(x1+x2 / 2 , y1+y2 / 2)
What is midpoint formula?
200
If a = b, then b = a.
What is symmetric property/postulate?
200
If two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.
What is SAS congruence postulate?
200
If two parallel lines are cut by a transversal, then the alternate interior angles are congruent.
What is alternate interior angles theorem?
200
Name of polygon with 10 sides.
What is decagon?
300
y - y1 = m(x - x1)
What is point-slope formula?
300
If a = b and b = c, then a = c.
What is transitive property/postulate?
300
If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.
What is ASA congruence postulate?
300
If two parallel lines are cut by a transversal, then the alternate exterior angles are congruent.
What is alternate exterior angles theorem?
300
Name of polygon with 8 sides.
What is octagon?
400
Ax + By = C
What is standard form?
400
If equal quantities are subtracted from equal quantities, the differences are equal. If A=B and C=D, then A-C = B-D
What is subtraction postulate/property?
400
If two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.
What is AAS congruence theorem?
400
If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles formed are supplementary.
What is consecutive interior angles theorem?
400
Name of polygon with 7 sides.
What is heptagon?
500
-b±√b²-4ac / 2a ̅̅̅
What is quadratic formula?
500
A quantity may be substituted for its equal in any expression or equasion. If X=5 and Y=X, we may substitute 5 for X and find Y= 5 + 3 = 8
What is substitution postulate/property?
500
Corresponding parts of congruent triangles are congruent.
What is CPCTC?
500
If two parallel lines are cut by a transversal, then the pairs of consecutive exterior angles formed are supplementary.
What is consecutive exterior angles theorem?
500
How you you find the interior angle measure?
What is (n-2)180 / n?
M
e
n
u