Question | Answer |
midline of a triangle : | is the line of joining the midpoint of two sides of a triangle |
The mid line of a triangle | is // to the 3rd side of the triangle |
The mid line of a triangle is half | as long as the 3rd side |
If a line containing the midpoint of one side of a triangle is // to the 2nd of a triangle | then also contains the midoint of the 3rd side of the triangle |
If 3 or more // lines cuts off seg. on trans. then | cut off congruent seg on every trans. |
Varignon's Theorem | If themidpoint of the side of any quad are joined then form a parallograme |
Trapezoid | If a quad and has exactly one pair of opp. sides // then trapezoid. |
Isosceles Trapeziod | If a Trapeziod who's non // sides are congrunet then isos trap. |
If a quad is a trap. and legs are congrunet then | Isosceles Trapezoid |
If a qud ia a trap. and has one pair of base angles congrunet then | isosceles trapezoid |
If a quad is a trap. and has congruent diagonals | then isosceles trapezoid |
Median Of Trapezoid | a seg. that joins the midpoint of non // side of a trap. |
If a median of a trapezoid then | seg. joins midpoints of non // sides of trap. |
If a seg. is the median of a trapezoid then | it is // to bases |
If seg. is a median of a traoezoid then | length is half the sum of the lengths of thebases |
If rhombus then four | sides congrunt |
If rhombus then diagonal | perpendicular |
If a rhombus then diagonal bisect | its angles |
square | If a quad. with 4 right angles and four congruent sides then square |
If paraolleogram has perpendicular diagonals then | Rhombus |
If a paraolleograme has consect. congrunet sides then | rhombus |
If diagonals of paraellograme bisect angles of parallelograme then | rhombus |
rectangle | If a quad. with four right angles then a rectangle |
If a quad has 4 rt angles then | rect. |
If a paralleograme has congruent diagonals | then rect |
If a paralleograme has one rt. angle | then rect |
If a quad has 3 rt. angles | the rect. |
The median to the hyp. of a rt. triangle is | half as long as the hyp. |
Hyp. of rt. triangle is twice as | long as the median to hyp. |
If a quad is a rect. with consecutive congurent sides | then a square |
If a quad is a rect with diagonals bisecting | one of it's angels then square |
If a quad is rect with perpendicular diagonals | then square |
If a quad is a rhombus with rt angles then | square |
If a quad is a rhombus with congruent diagonals | then square |
rhombus | If a quad. with four right sides congruent then a rhombus |