Quadrilaterals
Angle Pairs
Angles
Basic Geometric Ideas
Triangles
100
A quadrilateral with BOTH pairs of opposite sides parallel
What is a parallelogram
100
These angles have the same measure.
What are congruent angles
100
The end point to two different rays that creates an angle
What is the vertex
100
Straight path of points that goes on forever in two directions.
What is a line
100
One angle in the triangle is an obtuse angle
What is an obtuse triangle
200
A rectangle with ALL sides congruent
What is square
200
A pair of angles that are formed by intersecting lines and have no side in common
What are vertical angles
200
Angle of exactly 180 degrees
What is a straight angle
200
Part of a line, with one endpoint, extending forever in only one direction.
What is ray
200
One angle in the triangle is a right angle
What is a right triangle
300
A parallelogram with ALL sides congruent.
What is a rhombus
300
A pair of angles with a common vertex and a common side.
What are adjacent angles
300
Angle of exactly 90 degrees
What is a right angle
300
Line segments that are the same length.
What is congruent line segments
300
All sides of the triangle are congruent
What is an equilateral triangle
400
A parallelogram with four right angles.
What is a rectangle
400
Two angles whose measures add up to 90 degrees
What are complementary angles
400
Angle between 0 degrees and 90 degrees
What is an acute angle
400
Lines that never intersect
What are parallel lines
400
At least two sides of the triangle are congruent
What is isosceles triangle
500
A quadrilateral with only ONE pair of parallel sides.
What is a trapezoid
500
Two angles whose measures add up to 180 degrees
What are supplementary angles
500
Angle between 90 degrees and 180 degrees
What is an obtuse angle
500
Intersecting lines that form a right angle
What are perpendicular lines
500
No sides of the triangle are congruent
What is a scalene triangle
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