Geometry 1
The perpendicular segment from a vertex to the side opposite the vertex.
altitude
These angles have the same measure.
What are congruent angles
Divide into two equal parts
bisect
A chord that contains the center of the circle
diameter
Part of a line with two definite endpoints
line segment
Two figures that have the same shape, but not the same size
similar figures
A pair of angles that are formed by intersecting lines and have no side in common
What are vertical angles
An angle whose vertex is the center of the circle
Central angle
The point that divides a line segment into two congruent segments
midpoint
A parallelogram with ALL sides congruent.
What is a rhombus
A ray that divides an angle into two congruent angles
angle bisector
Points that lie on the same line
collinear points
A segment that joins the midpoints of two sides of the triangle
midsegment
Formed by two rays with the same endpoint
angle
Two angles whose measures add up to 90 degrees
What are complementary angles
Points in the same plane
coplanar points
A line/segment/ray that is perpendicular to the segment at its midpoint
perpendicular bisector
A quadrilateral with only ONE pair of parallel sides.
What is a trapezoid
Adjacent/ Hypotenuse
cosine
Two figures that have the same shape, but not the same size
similar figures