Test

get a hint

hint

collinear

collinear

points that lie on the same line####Coplanar

2. determine whether the biconditional is true

3. if not, provide a counterexample####What is a good definition?

uses clearly understood terms, is precise, and is reversible####deductive reasoning

2. p is true

conclusion: q is true####law of sylllogism

1. p-->q

2. q--> r

conclusion: p-->r####Addition Property of Equality

If a=b, then a+c=b+c####Subtraction Property of Equality

2. state any other information that we would need to use HL####CPCTC

corresponding parts of congruent triangles are congruent####midsegment of a triangle

• makes a right angle

• may or may not begin at a vertex####What does a angle bisector of a triangle do?

• bisects the angle it's drawn from

• always from the vertex to the side opposite####What is altitude of a triangle?

• the height of a triangle

• always forms a right angle with the side it intersects

• always starts at a vertex and intersects the opposite side

• may be inside, outside or on the triangle####what is median of a triangle?

• always from the vertex to the midpoint of the opposite side

• bisects the side opposite the vertex####Angle Bisector Theorem and its converse

a point is on a bisector of an angle, if and only if, it is equidistant from the two sides of the angle####Triangle Inequality Theorem

• each segment intersects exactly two other segments at their endpoints####triangle

3 sided polygon####quadrilateral

2. both pairs of opposite sides are congruent

3. both pairs of opposite angles are congruent

4. the diagonals bisect each other

5. one pair of opposite sides is both parallel and congruent

6. one angle is supplementary to both consecutive angles####rectangle

a parallelogram with 4 right angles####rhombus