Quadrilaterals
Triangles
Angles
Formulas
Circles
100
A polygon that has exactly four sides.
What is a Quadrilateral?
100
A Triangle with interior angles less than 90-degrees.
What is an... ACUTE Triangle?
Triangle
[also, Equilateral]
100
An Angle that is less than 90-degrees
What is an ... ACUTE Angle?
100
The formula for the Area of a Circle.
What is:
A = Pi *r^2
100
The set of points in a plane that are the same distance from a fixed point in the plane.
What is a CIRCLE?
200
A polygon with exactly one pair of parallel sides. The two parallel sides are called "bases."
What is a Trapezoid?
200
A Triangle with exactly one right angle.
What is a ....Right Triangle?
200
Angles or sides that are equal in measure are said to be ....
What is .....CONGRUENT?
200
The formula for the Circumference of a Circle.
What is:
C = Pi*D
C = 2*Pi*r
200
A line segment, or length of a segment, whose endpoints are the center of a circle and any point on the circle.
What is a Radius? [r = D/2 or D = 2r] where D is the diameter
300
A Parallelogram and a Rhombus with four congruent sides, and perpendicular diagonals.
What is a... Square?
300
A Triangle with NO congruent sides and angles.
What is... Scalene Triangle?
300
Two angles whose measures equal a sum of 90-degrees.
What are Complementary Angles [a+b=90]
[NOTE: Do NOT have to be adjacent]
300
The Sum of the Interior Angles of a Polygon.
What is: (N-2)180 = Sum of the Interior Angles
[Number of sides - 2]*180
300
A Circle around a Polygon whose vertices are points on the Circle...the polygon is said to be:
What is an... Inscribed Polygon?
400
A parallelogram with four Congruent sides and Diagonals are perpendicular (without right angles)
What is a.... Rhombus?
400
In Triangles, if Corresponding angles are congruent, and the Corresponding sides are proportional , the triangles are said to be...
What are... Similar Triangles?
400
Two angles whose measures equal a sum of 180-degrees.
What are Supplementary Angles. [a+b=180]
[NOTE: Do NOT have to be adjacent]
400
The formula for the Area of a Triangle.
What is:
A = (b*h)/2
400
A line, or line segment or ray, which intersects a circle at exactly one point.
What is a... Tangent?
500
A parallelogram with four right angles, and Diagonals that are congruent and bisect each other.
What is a... Rectangle?
500
If Angle-ABC is a right triangle, then the relationship between the hypotenuse and the triangle's legs is:
C^2 = A^2 + B^2
What is the... Pythagorean Theorem
500
An angle whose measure is greater than 90-degrees.
What is an... Obtuse Angle?
500
The formula for the Perimeter of a Rectangle.
What is:
P = 2(l) + 2(w)
500
A Circle around a Polygon, where the Polygon's vertices are points on the circle...the circle is said to be:
What is... Circumscribed?