Basic Concepts
Lines
Angles
Triangles
Quadrilaterals
100

This is a flat surface that extends into infinity.

What is Plane?

100

This is a type of line that lies on the y-axis of the Cartesian Plane.

What is a Vertical Line?

100

This is the measures for angles.

What is Degree/Radians?

100

This is the common endpoint of each side of a triangle.

What is/are Vertex/Vertices?

100

This is what quadrilaterals have that triangles don't.

What are Diagonals?

300

This refers to points that lie on the same plane.

What are Coplanar Points?

300

This is bounded by two endpoints making its length defined.

What is a Line Segment?

300

This angle refers to more than 180°.

What is Reflex Angle?

300
This is another type of triangle that an equilateral triangle falls under.


What is Acute Triangle?

300

This type of quadrilateral has equal and opposite sides, equal and opposite angles, 2 parallel sides, and 2 diagonals that bisect each other.

What is a Parallelogram?

500

This is "Geo" in Geometry.

What is Earth/Land?

500

This is the total angle of a straight line.

What is 180°?

500

This conjecture supports when two lines intersect, opposite angles are congruent.

What is Vertical Angle Conjecture?

500
This is the longest side in a right triangle.

What is Hypotenuse? 

500

This is a quadrilateral that has an area of 1/2(b1+b2)h.

What is a Trapezoid/Trapezium?
700

This can have infinitely many points making its length undefined.

What is a Line?

700

This is the value of x if two angles lie on a line being 4x+6 and 6x+4 respectively.

What is 17?
700

This is the supplement of the complement of 50°.

What is 140°?

700

This theorem states that an exterior angle is the sum of two remote interior angles.

What is the Exterior Angles Conjecture?
700

This is the value of x in a quadrilateral ABCD, ∠DAB is 2x, ∠ABC is 3x+2, ∠BCD is 4x-4, and ∠CDA is 12-2x.

What is 50?

1000

This is the volume of a sphere that has radius of 8 cm.

What is 2048π/3 cm³?

1000
This is a line relationship where one gets closer and closer to the other but never touches.

What are Asymptotic Lines?

1000

This is 540° in radians. (n° x π/180° = radians)

What is 3π?

1000

This triangle similarity theorem requires only two pairs of corresponding angles to be congruent to prove that two triangles are similar.

What is Angle-Angle Similarity Theorem?

1000

This is the total number of degrees you'll get if you add up one exterior angle from each vertex of any quadrilateral.

What is 360°?