Review Shapes Flashcards
What is an angle?
Two rays connected by a vertice.
What is a 3 sided polygon called?
A triangle
What is a 4 sided polygon called?
A quadrilateral
Define complementary.
Two angles that add up to 90 degrees.
Define Supplementary.
Two angles that add up to 180 degrees.
How many sides does a pentagon have?
5
How many sides does a hexagon have?
6
How many sides does a heptagon have?
7
How many sides does an octagon have?
8
What is the degree measure of a right angle?
90 degrees
What is the degree measure of a straight line?
180 degrees
What formula is used to find the interior angle sum of a polygon?
180 ( n - 2 )
Define regular polygon.
A polygon with all sides the same length and all angles the same degree measure.
What is a regular quadrilateral called?
A square
What is a regular triangle called?
An equilateral triangle
What makes an angle acute?
An angle that is less than 90 degrees.
What makes an angle obtuse?
An angle that is more than 90 and less than 180 degrees.
Define parallel lines.
Two lines that will never intersect.
Define vertical angles.
Two angles that are across from each other when two lines cross.
What is a transversal?
A line that intersects two parallel lines.
Define adjacent angles.
Two angles that share a side.
What is the interior angle sum of any triangle?
180 degrees
What is the interior angle sum of a quadrilateral?
360 degrees
What is a polygon?
A closed figure with straight sides that don’t cross each other.
What is a tessellation?
Covering a surface with shapes without gaps or spaces.
What are angles that are inside a polygon?
interior angles
What are angles that are outside a polygon?
exterior angles
Define symmetry.
A shape that has two halves that mirror each other perfectly.
What symbol is used to label an angle?
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What tool is used to measure an angle?
A protractor
What angles are used to help with estimation?
Benchmark angles
