Parts of a Circle Triangles Quadrilaterals Name The Polygon Name The Polyhedron
200
What is the circumference?
The line around the circle, equal to the diameter times the irrational number π
200
What is a²+b²=c²?
The Pythagorean Theorem
200
What is a parallelogram?
A quadrilateral with two pairs of parallel sides
200
What is a pentagon?
5 sides
200
What is a triangular prism?
Two bases, both of which have angle measures adding to 180
400
What is a chord?
A segment whose ends are on the circle. It does not necessarily go through the center.
400
What is 180°?
The number of degrees the angles of a triangle add up to
400
What is a rhombus?
A parallelogram with four congruent sides
400
What is an octagon?
8 sides
400
What is a pentagonal pyramid?
One base, which is a 5 sided shape
600
What is an arc?
A portion of the circumference, measured in degrees
600
What is a Pythagorean Triple?
A triangle with side lengths that are multiples of 3, 4, and 5, for example
600
What is a square?
A regular quadrilateral
600
What is a triangle?
3 sides
600
What is a rectangular prism?
Two bases, both of which are parallelograms with 4 right angles
800
What is an inscribed angle?
An angle whose vertex is on the circle
800
What is the 45-45-90 Theorem?
The hypotenuse's length is the length of either leg times the square root of 2
800
What is an isosceles trapezoid?
A quadrilateral with one pair of parallel sides and two pairs of congruent angles
800
What is a dodecagon?
12 sides
800
What is a hexagonal pyramid?
One base, whose central angle is 60 degrees
What is a common internal tangent?
A line that goes between two circles and only touches each circle once.
What is the tangent?
The ratio of the legs of a right triangle in trigonometry
What is a kite?
A quadrilateral with no pairs of parallel sides, but one pair of congruent angles
What is a heptagon?
7 sides
What is an icosahedron?
A Platonic solid with 20 sides






Geometry Semester 2 VOCAB

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