Geometry 1st Semester Final

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is the value of x in the equation if x + 10 = 24?

Back

x = 14

Front

Find the side length X if the triangle has sides of 15, 16, and X, and X is the longest side.

Back

X = 15

Front

What is the alternate interior angle to \( \angle3 \)?

Back

The alternate interior angle to \( \angle3 \) is \( \angle5 \).

Front

If two lines are perpendicular, what is the relationship between their slopes?

Back

The slopes of two perpendicular lines are negative reciprocals of each other.

Front

What is the slope of a line that is perpendicular to a line with a slope of \( \frac{1}{2} \)?

Back

The slope of the perpendicular line is -2.

Front

Define a right angle.

Back

A right angle is an angle that measures exactly 90 degrees.

Front

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

Back

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

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: \( \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \).