DSA Practice

Front

What is a right triangle?

Back

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

Front

How do you determine if three sides can form a triangle?

Back

Use the triangle inequality theorem: the sum of the lengths of any two sides must be greater than the length of the third side.

Front

What is the formula for the area of a square?

Back

Area = side length × side length.

Front

If the area of a square is 169 cm², what is the side length?

Back

The side length is 13 cm.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): c² = a² + b².

Front

How do you find the length of a missing side in a right triangle?

Back

Use the Pythagorean theorem to solve for the missing side.

Front

What is a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

What does it mean to translate a shape on a coordinate grid?

Back

To translate a shape means to move it to a different position without changing its size, shape, or orientation.

Front

What is the rule for translating a point (x, y) 4 units left and 5 units up?

Back

The rule is (x, y) → (x - 4, y + 5).

Front

How do you set up an equation to find the cost of tickets based on discounts?

Back

Let x be the cost of each ticket. Set up the equation: 9x - 120 = total cost for Group 1 and 3x - 30 = total cost for Group 2.