Circles
Formulas
Coordinates
Calculations
Proofs

### 100

The line segment between two points on a given curve.

What is a chord?

### 100

for a trapezoid's area

What is the formula (a+b) x h/2 ?

### 100

the line going left to right on the Cartesian plane, that has a value of zero

What is the x axis?

### 100

The relationship between two magnitudes with respect to the number of times the first number contains the second.

What is a ratio?

### 100

A shape that has 4 equal sides, but no right angles.

What is a rhombus?

### 200

The distance across a circle, which passes thru the centre.

What is the diameter?

### 200

twice the radial distance multiplied by pi

What is the circumference of a circle?

### 200

the line going up and down on the Cartesian plane?

What is the Y axis?

### 200

M = ((x+ x2) /2,  (y1 + y2)/2 )

What is the midpoint formula?

### 200

A Quadrilateral that has opposite sides parallel, but no right angles.

What is a Parallelogram?

### 300

the equation x2 + y2 = 36, describes a circle of what area?

What is (approximately) 113 sq. units.

### 300

Pi x r x r

What is the formula for area of a circle ?

### 300

The act of rotating around an axis

What is a rotation?

### 300

a2 + b2 = c2

What is the Pythagorean Theorem?

### 300

A Quadrilateral that has two pairs of adjacent sides with equal lengths.

What is a Kite?

### 400

The point that is equidistant from each vertex of a triangle.

What is the circumcentre?

### 400

a + b + c + d

What is formula for finding the perimeter of a trapezoid.

### 400

The point (0, -4) would be this.

What is a y intercept?

### 400

the two formulas needed to find the perpendicular bisector

What are the midpoint formula and the slope of a line formula?

### 400

Angles that are in matching corners

What are Corresponding Angles?

### 500

The point in a triangle where median lines meet.

What is an centroid?

### 500

(bxh)/2

How do you find the area of a triangle?

### 500

The line segment AB, where A(4, 6) and B ( -2, -2) has this slope.

What is -4/3 ?

### 500

1 in :200 cm

What is an example of a scale factor?

### 500

A figure whose circumcentre and centroid overlap.

What is an equilateral triangle?