definitions for trimester 1 Flashcards
(37 cards)
The intersection of two lines is a single _____
point
the intersection of two planes is a single _____
line
through any two points, there is exactly one _____
line
Through any three noncollinear points there is exactly one _______
plane
If two segments have the same measure, then they are _______
congruent
An equilateral triangle has ______ congruent sides
three
An isosceles triangle has _______ congruent sides
two
A scalene triangle has _______ congruent sides
no
A _____ is a quadrilateral with exactly one pair of parallel sides.
trapaziod
A ______ is a quadrilateral with two pairs of parallel sides
parallelogram
A ______ is a quadrilateral with four congruent sides
rhombus
a ______ is a quadrilateral with four right angles
square
if two parallel lines are cut by a transversal, then alternate interior angles are ________
congruent
if two parallel lines are cut by a transversal, then alternate exterior angles are _____
congruent
If two parallel lines are cut by a transversal, then same side interior angles are _______
supplementary
If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are _______
parallel
If two lines are cut by a transversal so that alternate exterior angles are congruent, then the lines are ______
parallel
The sum of the measure of the angles of a triangle is ______
360
The measure of the exterior angle of a triangle is equal to ______
180
the formula to find the sum of the measures of the interior angles of a polygon is:
180(n-2)
the measure of an interior angle of a regular polygon can be found by the formula:
(n-2)180/n
The formula to find the measure of an exterior angle:
360/n
A midsegment of a triangle is a segment whose endpoints are the _________ of two sides (“middle” is not an acceptable answer.)
midpoint
the measure of the midsegment of a triangle is _____ the measure of its parallel side
half
