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30 Cards in this Set
 Front
 Back
91

Two parallel lines lie in exactly one plane


92

In a plane if two lines are perpendicular to the same line, then they are parallel


93

Let L be a line and let P be a point not on L. Then there is at least one line through P, parallel to L


94

If two lines are cut by a transversal, and one pair of alternate interior angles are congruent, then the other pair of alternate interior angles are also congruent


95

Given two lines cut by a transversal. If a pair of alternate interior angles are congruent, then the lines are parallel


96

Given two lines cut by a transversal. If a pair of corresponding angles are congruent, then a pair of alternate interior angles are congruent


97

Given two lines cut by a transversal. If a pair of corresponding angles are congruent, then the lines are parallel


98

Given two lines cut by a transversal. If a pair of interior angles on the same side of the transversal are supplementary, the lines are parallel


99

If two parallel lines are cut by a transversal, each pair of corresponding angles are congruent


910

In a plane, if a line intersects one of two parallel lines in only one point, then it intersects the other


911

In a plane, if two lines are each parallel to a third line, then they are parallel to each other


912

In a plane, if a line is perpendicular to one of two parallel lines it is perpendicular to the other


913

For every triangle, the sum of the measures of the angles is 180


914

Each diagonal separates a parallelogram into two congruent triangles


915

In a parallelogram, any two opposite sides are congruent


916

In a parallelogram, any two opposite angles are congruent


917

In a parallelogram, any two consecutive angles are supplementary


918

The diagonals of a parallelogram bisect each other


919

Given a quadrilateral in which both pairs of oposite sides are congruent. Then the quadrilateral is a parallelogram


920

If two sides of a quadrilateral are parallel and congruent, then the quadrilateral is a parallelogram


921

If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram


922

The segment between the midpoints of two sides of a triangle is parallel to the third side and half as long


923

If a parallelogram has one right angle, then it has four right angles, and the parallelogram is a rectangle


924

In a rhombus, the diagonals are perpendicular to one another


925

If the diagonals of a quadrilateral bisect each other and are perpendicular, then the quadrilateral is a rhombus


926

The median to the hypotenuse of a right triangle is half as long as the hypotenuse


927
306090 Triangle Theorem 
If an acute angle of a right triangle has measure 30, then the opposite side is half as long as the hypotenuse


928

If one leg of a right triangle is half as long as the hypotenuse, then the opposite angle has measure 30


929

If three parallel lines intercept congruent segments on one transversal T, then they intercept congruent segments on every transversal T' which is parallel to T


930

If three parallel lines intercept congruent segments on one transversal, then they intercept congruent segments on any other transversal
