Geometry Review
What is a six sided polygon called?
Hexagon
What is a polygon with all angles and sides congruent called?
Regular polygon
What is a quadrilateral with opposite sides parallel called?
parallelogram
A simple closed figure formed by three or more sides is called what?
polygon
What is the most common unit of measure for an angle?
degree
What do you call an angle whose measure is between 0° and 90°? °°
Acute angle
What do you call an angle whose measure is between 90° and 180°?
Obtuse angle
What is a straight angle?
An angle that measures exactly 180°
If the sum of two angles adds to 180°, then they are called what?
Supplementary angles
If the sum of two angles adds to 9 0°, then they are called what?
Complementary angles
What is the supplementary angle of an angle that measures 43 °?
137 °
A triangle whose sides and angles are congruent is called what?
An equilateral triangle
A triangle that has 2 sides congruent is called what?
Isosceles triangle
If a triangle’s three sides are all different lengths, then it is called what?
Scalene triangle
What is an eight sided polygon called?
Octagon
What is a five sided polygon called?
Pentagon
What is an edge?
The intersection of faces of a 3- dimensional figure
How many edges does a hexagonal pyramid have?
12
What are vertices?
The point where the edges of a 3- dimensional figure intersect
How many vertices does a square pyramid have?
5
What is a face?
The flat surfaces of a three- dimensional figure
How many faces does a pentagonal prism have?
7
Sketch the net of a square pyramid.
What polygons make up the net of a cylinder?
Two circles and one rectangle
Why isn’t a circle a polygon?
It does not have sides, and it has curved edges.