Plane Geometry

What is a line that extends forever in opposite directions called?

• A line segment

• A ray

• A straight line

• A curve

If two lines intersect, what is the intersection called?

• A vertex

• A perpendicular

• A point of intersection

• A segment

Which of the following angles is obtuse?

A triangle has interior angles measuring 50° and 60°. What is the measure of the third angle?

Which of the following quadrilaterals has only one pair of parallel sides?

• Square

• Rectangle

• Trapezoid

• Rhombus

Which type of triangle has all three sides of equal length?

• Isosceles triangle

• Right triangle

• Scalene triangle

• Equilateral triangle

Which formula is used to calculate the circumference of a circle?

Which of the following is NOT a type of parallelogram?

• Square

• Rectangle

• Rhombus

• Trapezoid

What is a line that touches a circle at exactly one point called?

• Secant

• Chord

• Tangent

• Radius

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

• 270°

• 180°

• 360°

• 90°