Types of Polygons
Types of Angles
Basic Geometry Terms
Types of Triangles
Quadrilaterals
100
a 3 sided polygon
What is a triangle?
100
a 90 degree angle
What is a right angle?
100
an exact location
What is a point?
100
a triangle that has only acute angles
What is an acute triangle?
100
a rectangle with four congruent sides
What is square?
200
a 4 sided polygon
What is a quadrilateral?
200
an angle that measures less than 90 degrees
What is an acute angle?
200
a straight path that extends without end in opposite directions
What is a line?
200
contains one obtuse angle
What is an obtuse triangle?
200
a parallelogram with four congruent sides
What is a rhombus?
300
a 5 sided polygon
What is a pentagon?
300
an angle that measures between 90 and 180 degrees
What is an obtuse angle?
300
a flat surface that extends without end in all directions
What is a plane?
300
has no equal sides
What is a scalene triangle?
300
opposite sides are are parallel and congruent opposite angles are congruent
What is a parallelogram?
400
a 6 sided polygon
What is a hexagon?
400
two angles whose measures equal 90 degrees
What are complementary angles?
400
made of two endpoints and all the points between the endpoints
What is a line segment?
400
has three congruent sides
What is equilateral triangle?
400
a parallelogram with four right angles
What is a rectangle?
500
a 10 sided polygon
What is a decagon?
500
two angles whose measures equal 180 degrees
What are supplementary angles?
500
has one endpoint, and a ray that extends without end in one direction only
What is a ray?
500
has at least two congruent sides
What is an isosceles triangle?
500
a quadrilateral with exactly two parallel sides may have two right angles
What is a trapezoid?
M
e
n
u