几何知识测验

Which of the following has a fixed starting point and extends infinitely in one direction?

• Line

• Line segment

• Ray

• Point

A straight angle measures:

• 90°

• 180°

• 45°

• 360°

Two angles that add up to 90° are called:

• Supplementary angles

• Complementary angles

• Vertical angles

• Adjacent angles

Which pair of angles must sum to 180°?

• Vertical angles

• Complementary angles

• Supplementary angles

• Acute angles

If two lines are parallel and cut by a transversal, which angles are equal?

• Alternate interior angles

• Corresponding angles

• Vertical angles

• All of the above

Which triangle has all angles less than 90°?

• Right-angled triangle

• Acute triangle

• Obtuse triangle

• Equilateral triangle

In a right-angled triangle, the two acute angles are always:

• Supplementary

• Complementary

• Equal

• Vertical

The sum of the interior angles of any triangle is:

• 90°

• 180°

• 270°

• 360°

Which geometric element is represented by 'AB' with two endpoints?

• Line (线)

• Ray (射线)

• Line segment (线段)

• Angle (角)

In cubist art, parallel lines are often used to:

• Create depth (创造深度)

• Show movement (表现运动)

• Represent chaos (代表混乱)

• Simplify shapes (简化形状)