College-Prep Math Midterm

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

If two angles of a triangle are 26 degrees and 98 degrees, how do you find the third angle?

Back

Subtract the sum of the two angles from 180 degrees: 180 - (26 + 98) = 56 degrees.

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: P = a + b + c.

Front

How do you convert kilometers to meters?

Back

Multiply the number of kilometers by 1000. (1 km = 1000 m)

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width: A = length × width.

Front

How do you calculate the number of possible passwords with unique characters?

Back

Use the permutation formula: P(n, r) = n! / (n - r)! where n is the total characters available and r is the number of characters to choose.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is A = (base × height) / 2.

Front

What is the relationship between the sides of a triangle and its perimeter?

Back

The perimeter is the total length around the triangle, which is the sum of all three sides.

Front

How do you find the length of one side of a triangle if the perimeter and the lengths of the other two sides are known?

Back

Subtract the sum of the known sides from the perimeter: Third side = Perimeter - (Side1 + Side2).

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.