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# Lines and angles

Lines and Angles is a great part of mathematics. If you like the slide show please comment down below positively.

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### Lines and angles

1. 1. LINES AND ANGLES By: Mohammed Nehan Grade:7B
2. 2. WHAT ARE ANGLES? •In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane.
3. 3. TYPES OF ANGLES • In geometry, there are three types of angles: •Acute Angles •Right Angles •Obtuse Angles •Straight Angles •Reflex Angles
4. 4. ACUTE ANGLES • An acute angle ("acute" meaning "sharp") is an angle smaller than a right angle (it is less than 90 degrees).
5. 5. RIGHT ANGLES •Right Angles are angles whose measure is exactly of 90 degrees.
6. 6. OBTUSE ANGLES • Obtuse angles are angles whose measure is above 90 degrees and less than 180 degrees.
7. 7. STRAIGHT ANGLES •Straight angles are angles whose measure is exactly 180 degrees.
8. 8. REFLEX ANGLES • Reflex angles are angles whose measure is more than 180 degrees but less than 260 degrees.

Lines and Angles is a great part of mathematics. If you like the slide show please comment down below positively.

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