Angle pairs, parallel lines + transversal, triangle angle sum MCQs
Practice Angle pairs, parallel lines + transversal, triangle angle sum multiple-choice questions from Lines and Angles (Class 9 Maths) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
Angle pairs, parallel lines + transversal, triangle angle sumQuiz - Solve & Score
Q1. If two parallel lines are cut by a transversal, then which pair of angles is equal?
- A.Corresponding angles
- B.Co-interior angles
- C.Linear pair
- D.Adjacent supplementary
Answer: A. Corresponding angles
Which principle settles this? Corresponding angles are equal when the two lines are parallel. (Alternate interior angles are also equal, but the option here is corresponding.). Pick: A) Corresponding angles.
Q2. A carpenter cuts a corner brace so that its two parts together form the right angle of a window frame. If one part measures 18 degrees, what is the measure of the other part?
- A.162 degrees
- B.108 degrees
- C.72 degrees
- D.18 degrees
Answer: C. 72 degrees
The two angles complete a right angle, so they are complementary and sum to 90 degrees. Other = 90 - 18 = 72 degrees.
Q3. On a folding table leg, the brace makes a right angle with the floor split into two pieces by a rivet. One piece is 22 degrees; how large is the remaining piece?
- A.68 degrees
- B.22 degrees
- C.112 degrees
- D.158 degrees
Answer: A. 68 degrees
The two angles complete a right angle, so they are complementary and sum to 90 degrees. Other = 90 - 22 = 68 degrees.
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