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In the very beginning
Angles are not Angels
Grab Bag
Geometry is Everywhere
Even more Geometry
100
A straight path of points with no endpoints, this goes on forever in both directions.
What is a line.
100
An angle that measures less than 90 degrees.
What is an acute angle
100
Measures exactly 180 degrees.
What is a line.
100
All sides of this triangle are the same length.
What is an equilateral triangle.
100
Two lines that are always the same distance apart and never intersect.
What is parallel lines.
200
Part of a line that can be measured, has 2 endpoints.
What is a line segment.
200
An angle that measures exactly 90 degrees. The corner is often marked by a square.
What is a right angle.
200
Measures exactly 360 degrees.
What is a circle.
200
This triangle has 2 sides the same length.
What is an isosceles triangle.
200
Two lines that intersect to form four right angles where they intersect.
What are perpendicular lines.
300
Pictured by a dot, no length or width.
What is a point.
300
The mark you would make in the corner of an angle.
What is an arc.
300
All angles of this triangle are less than 90 degrees.
What is an acute triangle.
300
This triangle has no sides the same length.
What is a scalene triangle.
300
Two lines that cross each other at exactly one point.
What are intersecting lines.
400
A straight path that goes on forever in one direction.
What is a ray.
400
An angle that measures more than 90 degrees, but less than 180 degrees.
What is an obtuse angle.
400
This triangle has one right angle and 2 acute angles. The right angle is usually marked by a square.
What is a right triangle.
400
Having exactly the same size and shape.
What is congruent.
400
A four-sided polygon.
What is a quadrilateral.
500
The corner of an angle.
What is the vertex.
500
The device you can use to measure an angle.
What is a protractor.
500
This triangle has one obtuse angle and 2 acute angles.
What is an obtuse triangle.
500
A line that separates a figure into two congruent halves.
What is a line of symmetry.
500
A type of quadrilateral with one pair of parallel sides.
What is trapezoid.