Let x be the angle which is equal to its complement and y be the angle which is equal to its supplement. Then, 2x + 3y is equal to
ABCD is a quadrilateral in which BD = 40 cm. The lengths of the perpendiculars drawn from the opposite vertices on BD are 16 cm and 12 cm. The area of the quadrilateral (in cm)
560
580
600
500
A square and a circle are formed using pieces of wire oflength 5024 cm each. The ratio of the area of the square to that of the circle is
Anisha and Amit study in Class VIL Anisha told Amit that if the marks in Mathematics of each student in the class are increased by 5, the average would go up by 5. She further says that it is true for all numbers. Amit does not agree and Anisha proves it by taking the case n, instead of 5. Anisha is using
deductive logic
common sense
estimation
inductive logic
Using technology based games involving factorization of numbers or formation of new shapes by joining 2D shapes, etc
enhances students' ability to understand the concepts better as they are able to explore, observe and infer at their own pace
helps teacher to assess students' performance in Mathematics
helps teacher to manage students in Mathematics laboratory
enhances students' numeracy skills and computational skills
Writing proofs in geometry implies
argument or justification of statements
description of a geometrical problem
steps of drawing a figure
two-column table of axioms and deductions
"Two complementary angles are in the ratio 2 : 3. Find these angles." The above problem from NCERT textbook of Class VII refers to
lower order thinking as it is based on using the information in concrete situation
higher order thinking as it demands the interpretation of given information, its analysis and use in getting the desired information
higher order thinking as it demands construction of a figure using given information
lower order thinking as it is based on recalling information
Consider the following statement "If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram." This statement is a/an
axiom
proposition
definition
theorem
In NCERT exemplar book for Class VIII at the end of Unit 5, Understanding quadrilaterals and practical geometry', lots of activities like constructing tessellation, constructing tangrams, etc., are given. One of the objectives of such tasks is to help
kinesthetic learners only to improve their visual thinking skills
auditory learners only to improve their creative skills
all learners with different learning styles and to enhance spatial orientation
visual learners only to improve their analytical skills
Which one of the following activities is not appropriate for 'data representation and data interpretation'?
Survey
Debate
Newspaper report
Project
B.
Debate
Survey, newspaper report and projects are a part of data interpretation. Data can not be represented through debate