Supplementary and Complementary Angels To understand supplementary and complementary angles, first we need to understand the adjacent angles. Adjacent angle Two angles that have a common vertex and a common side but not overlap, are known as adjacent angles. Complementary Angles When the total of […]
Read More →Vertically Opposite Angles Theorem Vertical angles theorem or Vertically opposite angles theorem states that, If two lines intersect each other, then vertically opposite angles are equal. Given: In the above statement, given that two lines intersect each other, so let AB and CD are two lines intersect each other at O as shown in figure so […]
Read More →Read and Write Multiplication table of 18 Here we will learn how to read and write multiplication table of 18. Multiplication Table for 18 We write 18 times table as 18 x 1 = 18 18 x 2 = 36 18 x 3 = 54 18 x 4 = 72 18 x 5 = 90 […]
Read More →Square – Properties – Formula Here we will learn, about some geometrical properties of a square. In below figure ABCD is a square. Properties of a square 1. All four sides of a square are equal or congruent. 1. All four sides of a square are equal or congruent. AB = BC = CD = DA 2. All […]
Read More →Measure an angle with Protractor What is a protractor Shape of a protractor The shape of a protractor is as a semi circle. Protractor’s upper side is curved and lower side is a straight line.The curved edge is divided into 180 equal parts, and each part is equal to a degree. Most protractors have two […]
Read More →Angle – Angle – Similarity If two angles of a triangle are respectively equal to two angles of another triangle, then the two triangles are similar. Given: Two △ABC and △PQR such that ∠B = ∠Q, and ∠C = ∠R To prove: △ABC ~ △PQR Proof: In △ABC, ∠A + ∠B +∠C = 1800….(1) by angle sum property In △PQR∠P + […]
Read More →Prove that the angle in a semicircle is a right angle or Angle subtended by a diameter/Semicircle on any circle on any point of circle is 90º. Given: A circle O with centre O. BC is the diameter of circle subtending ∠BAC at […]
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