DCAS DCAS Geometry and Measurement

Question 1

What is the area of a rectangle with a length of 12 cm and a width of 5 cm?

Accepted Answer

60 cm²

Answer

The area of a rectangle is calculated by multiplying length × width, so 12 × 5 = 60 cm².

Question 2

Which of the following best describes a right angle?

Accepted Answer

An angle that measures exactly 90°

Answer

A right angle measures exactly 90° and is commonly shown with a small square in the corner.

Question 3

A triangle has sides measuring 3 cm, 4 cm, and 5 cm. What type of triangle is this?

Accepted Answer

Right triangle

Answer

A 3-4-5 triangle satisfies the Pythagorean theorem (3² + 4² = 5²), making it a right triangle.

Question 4

What is the perimeter of a square with a side length of 7 inches?

Accepted Answer

28 inches

Answer

The perimeter of a square is 4 × side length, so 4 × 7 = 28 inches.

Question 5

How many degrees are in a straight angle?

Accepted Answer

180°

Answer

A straight angle forms a straight line and always measures exactly 180°.

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