Q&A - Ask Doubts and Get Answers

Clear All
 Square is also a parallelogram as its opposite sides are parallel.
Squares, rectangles, parallelograms are all quadrilaterals as they all have four sides.
A square can be thought of as a special rhombus because like a rhombus it has all sides equal but all its angles are also equal.
 A rectangle can be thought of as a special parallelogram as it s a parallelogram only but with all angles equal to ninety degrees.
A square can be thought of as a special rectangle as it is a rectangle only but with all sides equal.
(a)(i) Acute angled triangle.     (ii) Isosceles triangle. (b)(i) Right angled triangle.     (ii) Scalane triangle. (c)(i) Obtuse angled triangle.     (ii) Isosceles triangle. (d)(i) Right angled triangle.     (ii) Isosceles triangle. (e)(i) Acute angled triangle.     (ii) Equilateral triangle. (f)(i) Obtuse angled triangle.    (ii) Scalane triangle.      
Measure of triangles Types of triangle (i) 3 sides of equal length (e)Equilateral (ii) 2 sides of equal length (g) Isoscles (iii) All sides of different length (a) Scalene (iv) 3 acute angles (f) Acute angled   (v) 1 right angle (d)Right angled (vi) 1 obtuse angle (c) Obtuse angled (vii) 1 right angle with two sides of equal length (b) Isoscles right angled
(a) CE = 5 - 3 = 2 units      EG = 7 - 5 = 2 units          Therefore CE = EG. (b) CE = EG therefore PE bisects CG. (c) PE is the perpendicular bisector for line segments DF and BH (d) (i) AC = 3 - 1 = 2 units          FG = 7 - 6 = 1 unit            Therefore AC > FG             True     (ii) CD = 4 - 3 = 1 unit          GH = 8 - 7 = 1 unit           Therefore CD = GH           True        ...
The angles of the two set quares are (i) 90o, 60o and 30o (ii) 90o, 45o and 45o Yes they have the common angle measure 90o
 (a) The adjacent edges of a table top are models for perpendicular lines. (b) The lines of a railway track are not models for perpendicular lines as they are parallel to each other. (c) The line segments forming the letter ‘L’ are models for perpendicular lines. (d) The line segments forming the letter ‘V’ are models for perpendicular lines.
  ANGLE MEASURE TYPE 40o Acute Angle 125o Obtuse Angle 85o Acute Angle 95o Obtuse Angle 1400 Obtuse Angle 1800 Straight Angle   
The angle measure between the hands of the clock in each figure is (a) 90o (b) 30o (c) 180o
(a) Measure of the given along = 40o  (b) Measure of the given along = 130o  (c) Measure of the given along = 65o  (d) Measure of the given along = 135o 
(a) An angle whose measure is less than that of a right angle is acute. (b) An angle whose measure is greater than that of a right angle is obtuse. (c) An angle whose measure is the sum of the measures of two right angles is straight. (d) When the sum of the measures of two angles is that of a right angle, then each one of them is acute. (e) When the sum of the measures of two angles is that of...
By estimation followed by confirmation by measurement we know that the second angle is greater.
Exams
Articles
Questions