Triangles
The sum of the internal angles
180 degrees
A quadrilateral with four equal sides could be called this
square or rhombus
The sum of the angles of a quadrilateral
360 degrees
Angles that sum to 180 degrees
supplementary
Sum of the exterior angles of a triangle
360
The name of the line connecting two midpoints of two sides of a triangle
midsegment
This type of trapezoid has equal base angles
isosceles trapezoid
The number of triangles possible by drawing all the possible diagonals from a single vertex
3
What we call the line segment cutting an angle into two equal parts
angle bisector
Sum of the interior angles of a quadrilateral
360
You are able to draw a circle that includes all three triangle vertices using this as the center
circumcenter
Diagonals are perpendicular in these 3 quadrilaterals
squares, rhombi and kites
The sum of the angles of a pentagon (5 sided)
540 degrees
Two angles that sum to 90 degrees
complementary
What is the formula of finding sum of the interior angles of a polygon?
(n-2) (180)
The intersection of the medians of a triangle form this type of center
centroid
A polygon is a quadrilateral only if this is true
it has four sides
The sum of the internal angles of a hexagon
720 degrees
Perpendicular lines intersect to form this size angle
90 degrees
polygon with the sum of the interior angles=540
Pentagon
The incenter is created from the intersection of these three line segments
angle bisectors
After drawing all the possible diagonals from a single vertex, this is how many triangles would be created in a quadrilateral
2
This is the generic formula for determining the sum of the internal angles of any polygon (entitled to help on the board)
(n-2)x180 degrees
This type of polygon has at least one vertex inside the polygon
concave
Measure of each exterior angles of a pentagon
72