Vocab
the point where two sides of a polygon meet
What is a vertex?
any two lines that cross at a point
What are intersecting lines?
any four-sided figure
What is a quadrilateral?
two angles that measure 90 degrees together
What are complementary angles?
intersecting lines that form four right angles
What are perpendicular lines?
an angle that measures exactly 180 degrees
What is a straight angle?
four congruent sides, but no right angles
What is a rhombus?
two angles that measure 180 degrees together
What are supplementary angles?
two polygons that have the same shape and size
What is congruent?
two angles that have a sum of 90 degrees
What are complementary angles?
What is a parallelogram?
the supplement of a 75 degree angle
What is 105 degrees?
portion of a line having two endpoints
What is a line segment?
an angle that measures between 180 and 360 degrees
What is a reflex angle?
a quadrilateral with one pair of parallel sides
What is a trapezoid?
the perimeter of a rectangle with length of 10 inches and width of 5 inches
What is 30 inches?
lines that never intersect
What are parallel lines?
two angles with a common side between them
What are adjacent angles?
a five-sided figure with all congruent sides
What is a regular pentagon?
the perimeter of a regular octagon with sides of 9 centimeters
What is 72 centimeters?