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100
An exact location, usually represented by a dot.
What is a point?
100
Lines that lie in different planes that are neither parallel nor intersecting.
What is skew?
100
Formed by two rays with a common endpoint.
What is an angle?
100
An angle that measures greater than 90° and less than 180°.
What is an obtuse angle?
100
When the angles formed by two intersecting lines measure 90°.
What is perpendicular lines?
200
An angle that measures exactly 180°.
What is a straight angle?
200
a straight path that has not thickness and extends forever in opposite directions.
What is a line?
200
A line segment that connects two non-adjacent vertices of a polygon.
What is diagonal?
200
A flat surface that has no thickness and extends forever.
What is a plane?
200
Two lines that do not intersect.
What is parallel?
300
Part of a line or a ray that extends from one endpoint to another.
What is a line segment?
300
An angle that measures greater than 0° and less than 90°.
What is an acute angle?
300
When the sum of the measures of two angles is 90°.
What is complementary angles?
300
Part of a line that has one endpoint and extends forever in one direction.
What is a ray?
300
Figures that have the same shape and size.
What is congruent?
400
The point where two sides intersect.
What is vertex?
400
When the sum of the measures of two angles is 180°.
What is supplementary angles?
400
Angles that measure more than 180°.
What is reflex angle?
400
2-dimensional shapes that are made of straight lines, and the shape is "closed".
What is a polygon?
400
A 2-dimensional shape with four straight sides.
What is a quadrilateral?
500
A flat shape with 4 equal straight sides shaped like a diamond.
What is a rhombus?
500
A 2-dimensional shape made by drawing a curve that is always the same distance from the center. You can draw this shape with a compass.
What is a circle?
500
All the angles of a triangle add up to this.
What is 180°?
500
All the angles of a quadrilateral add up to this.
What is 360°?
500
This polygon has 18 sides.
What is an octakaidecagon?
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