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Triangles
Angles
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Definitions
100
This type of triangle has 3 congruent sides and 3 congruent angles.
Equilateral Triangle
100
An angle that measures larger than 90 degrees but less than 180 degrees is called
An obtuse angle
100
A five sided figure is called
A pentagon
100
A rectangle is (always, sometimes, never) a square.
Sometimes
100
A _________ is an endless path. It goes on forever in both directions.
Line
200
In this type of triangle all sides are different lengths.
Scalene Triangle
200
An angle that measures less than 90 degrees is called
An acute angle
200
An eight sided figure is called
An octagon
200
A square is (always, sometimes, never) a rhombus
Always
200
Lines that never cross or meet are called
Parallel lines
300
This triangle has two congruent sides
Isosceles Triangle
300
An angle that measures exactly 90 degrees is called
A right angle
300
A six sided figure is called
A hexagon
300
A trapezoid is (always, sometimes, never) a parallelogram
NEVER!!!!
300
Lines that cross at one point are called
Intersecting lines
400
This triangle has one 90 degree angle
Right Triangle
400
An angle that measures exactly 180 degrees is called
A straight angle
400
What is the least number of sides a polygon can have?
Three
400
A square is (always, sometimes, never) a parallelogram
Always
400
This is a part of a line that has one endpoint and goes on forever in one direction.
A Ray
500
A triangle that has 3 congruent sides and all angles are less than 90 degrees is classified by these two names:
Acute equilateral triangle
500
An angle that measures larger than 180 degrees is called
A reflex angle
500
What makes a polygon a regular polygon?
All sides and angles are congruent.
500
Name three types of parallelograms
Squares, rectangles, rhombuses
500
These lines are lines that intersect to form four right angles.
Perpendicular Lines