Geometry ch. 1-2: Angles and triangles
a location on a plane or in space
The set of all points on a plane in a single path that continues in opposite directions
The set of al points on a flat surface that extends in all directions
Part of a line; Named by two endpoints.
The set of all points in a single path beginning at an endpoint and continuing in one direction
The joining of two rays to a common endpoint
Endpoint of the angle
An angle that measures between 0 and 90 degrees
An angle that measures 90 degrees
An angle that measures between 90 and 180 degrees
An angle that measures 180 degrees
An angle that measures more than 180 degrees
Two angles whose measures add up to 90 degrees are ____________.
Two angles whose measures add up to 180 degrees are _________.
Angles that are nonadjacent that are formed when two lines intersect are __________ angles.
Two lines on the same plane that will never intersect are __________ lines.
_________ angles are formed when a transversal cuts two or more other lines; They are on the same side of the transversal on the same side of the parallel line that forms each angle.
Formed when a transversal cuts two or more lines; Opposite sides of the transversal, but on the einterior of the parallel lines.
Opposite sides of the transversal on the exterior
lines that meet to form right angles are _________.
A triangle whose sides are each different lengths
A triangle in which two sides have the same measure
A triangle that has three congruent sides
a triangle with three acute angles
A triangle with one obtuse angle and two acute angles
A triangle that contains one right angle and two acute angles. The two acute angles are complimentary.
A triangle with two congruent sides, a right angle, and two acute angles that are equal in measure.
A triangle that contains sides each with different lengths, a right angle, and two acute angles that are complimentary, but not necessarily congruent.
A triangle that has two congruent sides, an obtuse angle, and two congruent acute angles.
A triangle that has two congruent sides and each of the angles is acute. The two acute base angles are congruent.
Figures that have the same shape, but not necessarily the same size
Triangles that have corresponding sides, or sides that line up, that are in proportion to each other are ________ triangles.