Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
math ch. 8 theorems
math ch 8 vocab... postulates... theorems
| Question | Answer |
|---|---|
| polygon interior Angles Theorem | the sum of the measures of the interior angles of a convex n-gon is (n-2)*180 degrees |
| corollary | the sum of the measures of the interior angles of a quadrilateral is 180 degrees. |
| polygon Exterior Angles Theorem | the sum of the measures of the exterior angles if a convex polygon, one angle at each vertex, is 360 degrees |
| polygon Exterior Angles Theorem 2 | if a quadrilateral is a parallelogram, then its opposite sides are congruent. |
| polygon Exterior Angles Theorem 3 | if a quadrilateral is a parallelogram, then its opposite angles are congruent |
| polygon Exterior Angles Theorem 4 | if a quadrilateral is a parallelogram, then its diagonals bisect each other |
| polygon Exterior Angles Theorem 5 | if both pairs of opposite angles of a quadrilateral are congruent, then the quadrilateral is a parallelogram,. |
| polygon Exterior Angles Theorem 6 | if both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. |
| polygon Exterior Angles Theorem 7 | if one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram |
| polygon Exterior Angles Theorem 8 | of the diagonals of a quadrilateral bisect each of other then the quadrilateral is a parallelogram. |
| polygon Exterior Angles Theorem 9 | if one pair of opposite sides are congruent and parallel then the quadrilateral is a parallelogram. |
| Rhombus corollary | a quadrilateral is a rhombus if and only if if has four congruent sides. |
| Rectangle corollary | a quadrilateral is a rectangle if and only if if has four right angles. |
| square corollary | a quadrilateral is a square is and only if its a rhombus and a rectangle. |
| shapes corollary | a parallelogram is a rhombus if and only if its diagonals are perpendicular. |
| shapes corollary 2 | a parallelogram is a rhombus if and only if each diagonal bisects a pair of opposite angles. |
| shapes corollary 4 | a parallelogram is a rectangles if and only if its diagonals are congruent. |
| shapes corollary 5 | if a trapezoid is isosceles, then both pairs of base angles are congruent. |
| shapes corollary 6 | if a trapezoid has a pair of congruent base angles, them it is an isosceles trapezoid. |
| shapes corollary 7 | a trapezoid is isosceles if and only is its diagonals are congruent. |
| Midsegment Theorem for trapezoids | the mud segment of a trapezoid is parallel to each bas and its length if one half the sum of the lengths of the bases. |
| Midsegment Theorem for trapezoids 2 | if a quadrilateral is a kite, then exactly on pair of opposite angles are congruent. |
| Midsegment Theorem for trapezoids 3 | if a quadrilateral is a kite then its diagonals are perpendicular. |
Created by:
the cat
Popular Math sets