math vocab 7.2

POINT

AN EXACT LOCATION IN SPACE

LINE

A STRAIGHT PATH THAT EXTENDS WITHOUT END IN OPPOSITE DIRECTIONS

RAY

IT HAS ONE ENDPOINT AND EXTENDS WITHOUT END IN ONE DIRECTION

LINE SEGMENT

A PART OF A LINEOR A RAY THAT EXTENDS FROM ONE ENDPOINT TO ANOTHER

PLANE

A PERFECTLY FLAT SURFACE THAT EXTENDS INFINITELY IN ALL DIRECTIONS

CONGRUENT

SAME SIZE AND SHAPE

ANGLE

FORMED BY TWO RAYS IN A COMMON ENDPOINT

VERTEX

COMMON ENDPOINT

RIGHT ANGLE

MEASURES EXACTLY 90 DEGREES

ACUTE ANGLE

MEASURES LESS THAN 90 DEGREES

OBTUSE ANGLE

MEASURES MORE THAN 90 DEGREES BUT LESS THAN 180 DEGREES

STRAIGHT ANGLE

180 DEGREES

COMPLEMENTARY ANGLE

2 ANGLES THAT ADD UP TO 90 DEGREES

SUPPLEMENTARY ANGLES

2 ANGLES THAT ADD UP TO 180 DEGREES

PERPENDICULAR LINES

INTERSECTING LINES THAT FORM 90 DEGREES

PARALLEL LINES

LINES IN THE SAME PLANE THAT NEVER INTERSECT

SKEW LINES

DIFFERENT PLANES THAT NEVER INTERSECT

VERTICAL ANGLES

OPPOSIT ANGLES FORMED BY INTERSECTING LINES

TRANSVERSAL LINES

A LINE THAT CROSSES 2 OR MORE LINES