SE-SEMESTER 1 EXAM-REVIEW

Front

What type of lines are represented by the black lines on a Railroad Crossing sign?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

Identify the geometric figure shown in the image: Ray, Line, Circle, Square.

Back

A Line is a straight one-dimensional figure that has no thickness and extends infinitely in both directions.

Front

In the expression 8x + 5, what is 8?

Back

8 is a coefficient, which is a numerical factor in a term of an algebraic expression.

Front

What is the term for an angle that measures exactly 180 degrees?

Back

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

Front

Calculate the perimeter of a rectangle with length 10 cm and width 5 cm.

Back

The perimeter is 30 cm, calculated as P = 2(length + width) = 2(10 + 5) = 30.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

Define a ray in geometry.

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is a circle?

Back

A circle is a shape consisting of all points in a plane that are a fixed distance from a center point.

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.