Teachoo MCQ Test

Assertion Reasoning Quiz

Preparing for CBSE

Chapter 7 Class 7 - A tale of three Intersecting Lines (Ganit Prakash) | 7 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
Time remaining 672
Question 1 of 7
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Question 1 of 7
Assertion (A): If the remote interior angles are 38° and 72°, the exterior angle is 110°.
Reason (R): Adding the two remote interior angles gives \(38+72=110\)°.
Select one option. Answers are shown after the test.
Question 2 of 7
Assertion (A): A triangle with sides 6 cm, 8 cm and 10 cm is scalene.
Reason (R): A triangle with angles 40°, 60° and 80° is acute-angled.
Select one option. Answers are shown after the test.
Question 3 of 7
Assertion (A): With ∠B = 90° and hypotenuse AC = 5 cm, more than one triangle can be constructed.
Reason (R): Sides 9 cm, 12 cm and 20 cm form a triangle because \(9+12>20\).
Select one option. Answers are shown after the test.
Question 4 of 7
Assertion (A): In the shown right triangle, side AB is the altitude from A to BC.
Reason (R): A separate triangle with angles 40°, 60° and 80° is acute.
Locate the altitudeA right triangle ABC with the perpendicular from A to the line through B and C.ABC
Decide where the perpendicular from A meets the line through BC.
Select one option. Answers are shown after the test.
Question 5 of 7
Assertion (A): In right triangle ABC with ∠B = 90°, both AB and BC serve as altitudes.
Reason (R): AB is perpendicular to BC, so AB is the altitude from A and BC is the altitude from C.
Select one option. Answers are shown after the test.
Question 6 of 7
Assertion (A): A third side of 7 cm works with sides 5 cm and 9 cm.
Reason (R): The third side may equal the difference \(9-5=4\) cm.
Select one option. Answers are shown after the test.
Question 7 of 7
Assertion (A): If ∠A = 2∠B and ∠C = ∠B + 30°, then ∠B = 37.5°.
Reason (R): Substitution gives \(2B+B+(B+30)=180\).
Select one option. Answers are shown after the test.