This type of line only intersects with a circle at one point.
What is a tangent?
100
If a triangle has two congruent sides, it is this type of triangle.
What is an isosceles triangle?
100
Your friend says that if the sum of the interior angles in a polygon is 720°, it is a regular octogon. It's a regular this.
What is a hexagon?
100
This polygon is perhaps better known for the government facility of the same name and shape.
What is a pentagon?
200
In contrast to a secant, this type of line segment exists entirely within the circle.
What is a chord?
200
A quadrilateral with angle measures of 30°, 60°, 30°, and 60°, respectively, is one of this type.
What is a parallelogram?
200
Your friend says that a triangle can have side measures of three, five, and ten. According to this theorem, that is incorrect.
What is the Sum of Two Sides Theorem?
200
The interior angle sum of this polygon is 720°. The angles measure 120° each.
What is a hexagon?
300
The measure of the diameter of a circle is 2r, where r represents this.
What is the radius?
300
If a circle has a diameter with a measure of 8", its circumference is this.
What is 25.13?
300
One of your friends says that two squares will always be congruent, because of their angle measures. This is wrong, but all squares are this.
What is similar?
300
This figure has four congruent sides and four congruent angles.
What is a square?
400
A chord passes through the center of a circle and has a measure of 6'. The circumference of the circle is this.
What is 18.84?
400
This is the measure the exterior angles of a regular dodecagon.
What is 30°?
400
Your friend says that any decagon must have interior angle measures of 144° each. In reality, only this type of polygon has definite angle measures.
What is a regular polygon?
400
This polygon's exterior angles measure 40° each.
What is a nonagon?
500
The diameter of a circle is 23". Its area is this.
What is 415.47?
500
This theorem states that no one side of a triangle can have a greater measure than the sum of the other two.
What is the Sum of Two Sides Theorem?
500
Your best friend says that an any two polygons can be proven congruent with the Angle-Side-Side Theorem. In reality, the theorem he is thinking of is this theorem, featuring another angle, and one less side.