Lines and Angles — Practice

Q1. In geometry, a point is best described as

• A. A small filled circle drawn with ink
• B. An object that has a precise location but no length, breadth or height
• C. A short line segment with two ends very close together
• D. The thinnest possible curved line

Q2. Which of the following properties does a point have?

• A. Length but no breadth
• B. Breadth but no length
• C. No length, no breadth, no height
• D. All three — length, breadth and height

Q3. The line segment from point A to point B is best defined as

• A. The longest path connecting A and B
• B. Any curved path joining A and B
• C. The shortest path from A to B, including A and B
• D. A ray starting at A and going through B

Q4. The line segment joining the points A and B is denoted by

• A. AB with a bar above the letters
• B. AB with a double-headed arrow above the letters
• C. AB with a single arrow above the letters
• D. The single letter A only

Q5. A line is obtained when a line segment AB is

• A. Cut into two equal parts at the middle
• B. Extended without any end in both directions
• C. Extended only in the direction of B
• D. Folded so that A coincides with B

Q6. A line passing through two points A and B is written by placing which symbol above AB?

• A. A bar (line segment symbol)
• B. An arrow pointing only towards B
• C. A double-headed arrow
• D. A small curve

Q7. A ray is best described as

• A. A portion of a line that ends at two definite points
• B. A portion of a line that starts at one point and goes on endlessly in one direction
• C. A line that has no starting point and no ending point
• D. A curved path between two points

Q8. Which of the following is given in the chapter as a real-life model of a ray?

• A. The crease formed when a piece of paper is folded
• B. A beam of light coming out of a lighthouse
• C. The sharpened tip of a pencil
• D. Two roads crossing each other in a town

Q9. An angle is formed by

• A. Two line segments of equal length
• B. Two rays having a common starting point
• C. A single ray bent into a curve
• D. Any two points joined by a straight line

Q10. In an angle formed by two rays starting at a common point, the common starting point is called the

• A. Arm of the angle
• B. Side of the angle
• C. Vertex of the angle
• D. Base of the angle

Q11. An angle whose two arms lie in one straight line is called a

• A. Right angle
• B. Straight angle
• C. Acute angle
• D. Reflex angle

Q12. A right angle corresponds to how much of a full turn?

• A. Half of a full turn
• B. One-third of a full turn
• C. One-fourth (a quarter) of a full turn
• D. One-eighth of a full turn

Q13. An acute angle is an angle whose measure is

• A. Exactly equal to 90°
• B. Greater than 0° and less than 90°
• C. Greater than 90° and less than 180°
• D. Greater than 180° and less than 360°

Q14. An obtuse angle is an angle whose measure is

• A. Less than 90°
• B. Exactly 90°
• C. Greater than 90° and less than 180°
• D. Exactly 180°

Q15. Which of these is NOT given in the chapter as a model for a point?

• A. The sharpened end of a pencil
• B. The pointed end of a needle
• C. The tip of a compass
• D. The crease formed by folding a sheet of paper