Geometry

Angles, area, triangles and circles.

Using the Pythagorean theorem
a² + b² = c², where c is always the side opposite the right angle.
Area of a triangle
Area = ½ × base × perpendicular height.
Area vs circumference of a circle
Area is πr²; circumference is 2πr.
Angles in a triangle add to 180°
The three interior angles of any triangle sum to 180°.
Angles on parallel lines
Alternate and corresponding angles are equal; co-interior angles add to 180°.
The exterior angle of a triangle
An exterior angle equals the sum of the two opposite interior angles.
Choosing sine, cosine or tangent (SOH CAH TOA)
Label the sides from the angle, then pick the ratio that uses the two you have.
Volume of a cylinder
Volume = area of the circle base × height = πr²h.
Finding arc length
Arc length is the angle's fraction of 360° times the circumference.

Save this as a miss — practice it before your test

Sugar brings it back for review until it sticks. Free, no card.

Save this as a miss — practice it before your test