Circles
Triangles
Quadrilaterals
Formulae
Angle Vocabulary
100
This is a point inside the circle that is the same distance to every point on the circle.
What is the center?
100
This is the name of a triangle with three congruent sides.
What is an equilateral triangle?
100
This quadrilateral has two sets of parallel sides.
What is a parallelogram?
100
This is the formula for the area of a square.
What is length times length (or length squared)?
100
This is the name for angles that have the same measurement.
What is congruent?
200
This is a line segment that starts at the center and ends on the circle.
What is a radius?
200
This is the name for a triangle with one angle that is 90 degrees.
What is a right triangle?
200
This parallelogram can be recognized by having four right angles.
What is a rectangle?
200
The formula for the area of this shape is length times width.
What is a rectangle?
200
These congruent angles are formed by intersecting lines, and they are opposite each other.
What are vertical angles?
300
This is a line segment with both endpoints on the circle that does not pass through the center.
What is a chord?
300
This is the sum of the angle measurements inside a triangle?
What is 180 degrees?
300
These are the two types of parallelograms that describe a square.
What are a rectangle and a rhombus?
300
The formula for the area of this shape is base times height.
What is a parallelogram?
300
This is the name for angles whose measures add up to 90 degrees.
What are complementary angles?
400
The formula for this can be expressed as pi times the diameter.
What is circumference?
400
In an obtuse triangle, the angles that are NOT obtuse can be classified as this.
What is an acute angle?
400
This is the sum of the angle measurements inside a quadrilateral.
What is 360 degrees?
400
The area of this shape is given by one half times the base times the height.
What is a triangle?
400
This is the name of angles that are both supplementary and adjacent.
What is a linear pair?
500
This is the formula for the area of a circle.
What is pi times r squared?
500
This is the name for a triangle with three sides that are different lengths.
What is a scalene triangle?
500
This is the formula for the area of a parallelogram.
What is base times height?
500
This is the formula for the area of a circle.
What is pi times the radius squared?
500
These congruent angles are on opposite sides of the transversal and between the parallel lines.
What are alternate interior angles?
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