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 angl..
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 angl..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 figures has an angle that appears to be a right angle?
Which figures has an angle that appears to be a right angle? => Figure 2 or Figure 4 or Figure 1 or Figure 3..
Which of the angle measures appears to be 60°?
Which of the angle measures appears to be 60°? => Figure 3 or Figure 1 or Figure 2 or Figure 4..
Angles
Fig.(i) Fig.(ii) Fig.(iii) Let OA and OB two half lines with common end point O. The half lines OA and OB are the sides of an angle and the point O is the vertex of the angle. An angle..
Fig.(i) Fig.(ii) Fig.(iii) Let OA and OB two half lines with common end point O. The half lines OA and OB are the sides of an angle and the point O is the vertex of the angle. An angle..Which angle measures less than 90° ?
Which angle measures less than 90° ? => angle 2 or angle 3 or angle 1 or angle 4..
Identify a rhombus with four right angles.
Identify a rhombus with four right angles. => Figure 1 or Figure 2 or Figure 4 or Figure 3..
Identify the interior angles in the figure.
Identify the interior angles in the figure. => 1, 2, 3 and 4 or 5, 6, 7 and 8 or 1, 2, 7 and 8 or 3, 4, 5 and 6..
Identify the exterior angles in the figure.
Identify the exterior angles in the figure. => 1, 2 or 5, 7 or 3, 4 or 2, 3..
Measurement of Angles
To measure an angle we shall use two kinds of units, the degree unit and the radian unit. A degree(Sexagesimal system) is defined to be an angle formed by half-line (or a ray) rotated about its end point (1/360) of a complete revolution...
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