Angles
Definition - When two straight lines meet at a point they form an angle. The point at which the arms meet (O) is known as the vertex of the angle. The amount of turning from one arm (OA) to other (OB) is called the measure of the angle ( AOB) and wr..
Definition - When two straight lines meet at a point they form an angle. The point at which the arms meet (O) is known as the vertex of the angle. The amount of turning from one arm (OA) to other (OB) is called the measure of the angle ( AOB) and wr..Supplementary angles
Two angles are said to be supplementary, if the sum of their measures is 180 o..
Find the measures of two supplementary angles, ∠M and ∠N, if t..
Find the measures of two supplementary angles, ∠ M and ∠ N, if the measure of ∠ N is 4 less than 3 times the measure of ∠ M. => 52 and 128 or 48 and 132 or 42 and ..
Angle
In a given plane two lines intersect at only one point. The angles are measured with the help of a protractor. The measure of an angle is called its magnitud..
Which angle measures less than 90°?
Which angle measures less than 90°? => angle 2 or angle 4 or angle 1 or angle 3..
Measurement of Angles
To measure an angle we shall use two kinds of units, the degree unit and the radian un..
Supplementary angles
They are a pair of angles, the sum of whose measures is equal to 180 o . These may be adjacent angles as well. [See figure below] [See figure below] (non-adjacent angles..
They are a pair of angles, the sum of whose measures is equal to 180 o . These may be adjacent angles as well. [See figure below] [See figure below] (non-adjacent angles..Two adjacent angles of a parallelogram are in the ratio 4 : 3. Find t..
Two adjacent angles of a parallelogram are in the ratio 4 : 3. Find the measures of all angles. => 106, 74, 106, 74 or 93, 87, 93, 87 or 103, 77, 103, 77 or 108, 72, 108, 72..
Find the measures of the angles of the parallelogram.
Find the measures of the angles of the parallelogram. => x = 100°, y = 100°, z = 100° or x = 100°, y = 80°, z = 100° or x = 80°, y = 80°, z = 80° or x = 80°, y = 100°, z = 80°..
Angles
Reflex Angle : An angle whose measure is more than 180 o and less than 360 o is called a reflex angle..
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