Angles
Lines
Terms
More Terms
Triangles
100
angle measuring less than 90 degrees
What is an acute angle?
100
these lines never intersect
What are parallel lines?
100
an exact location in space
What is a point?
100
a part of a line that has one endpoint and continues endlessly in one direction
What is a ray?
100
a triangle with two equal sides
What is an isosceles triangle?
200
angle measuring greater than 90 degrees
What is an obtuse angle?
200
a straight path of points that goes on and on in two directions
What is a line?
200
the point where two lines, sides, or rays meet
What is a vertex?
200
each of the line segments of a polygon
What is a side?
200
a triangle in which all sides are the same length
What is an equilateral triangle?
300
angle measuring 180 degrees
What is a straight angle?
300
two intersecting lines that form right angles
What are perpendicular lines?
300
an endless flat surface
What is a plane?
300
a closed plane figure made up of line segments
What is a polygon?
300
a triangle in which there is one obtuse angle
What is an obtuse triangle?
400
angle measuring 90 degrees; forms a square corner
What is a right angle?
400
lines that pass through the same endpoint
What are intersecting lines?
400
a tool used to measure and draw angles
What is a protractor?
400
a 4-sided polygon
What is a quadrilateral?
400
a triangle in which no sides are the same length
What is a scalene triangle?
500
figure formed by two rays that have the same endpoint
What is an angle?
500
part of a line with two endpoints
What is a line segment?
500
a unit of measurement used to measure an angle
What is a degree?
500
3-sided polygon
What is a triangle?
500
a triangle in which there is one right angle
What is a right triangle?
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