Geometry Review

Front

What is the definition of cosine in a right triangle?

Back

Cosine (cos) of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a triangle?

Back

Area = (1/2) × base × height.

Front

What is the formula for the area of a trapezoid?

Back

Area = (1/2) × (base1 + base2) × height.

Front

What is the perimeter of a square?

Back

Perimeter = 4 × side length.

Front

How do you calculate the cosine of an angle using a right triangle?

Back

Cosine of angle Q = adjacent side / hypotenuse.

Front

What is the relationship between the sides of a 5-12-13 triangle?

Back

It is a Pythagorean triple, satisfying the equation a² + b² = c².

Front

What is the area of a rectangle with a length of 8 cm and a width of 3 cm?

Back

Area = 8 cm × 3 cm = 24 sq. cm.

Front

What is the area of a triangle with a base of 6 cm and a height of 5 cm?

Back

Area = (1/2) × 6 cm × 5 cm = 15 sq. cm.

Front

What is the perimeter of a rectangle with a length of 10 cm and a width of 4 cm?

Back

Perimeter = 2 × (length + width) = 2 × (10 cm + 4 cm) = 28 cm.