We have made one full turn of 360 degrees. There are 360 degrees in a full turn. T: How many

**90**-degree angles or right angles are there in a full turn? S:**Four right angles**.Keeping this in view, how many right angles are there in a half turn?

Identify right angles, recognise that

**two right angles**make a half-turn, three make three quarters of a turn and four a complete turn; identify whether angles are greater than or less than a right angle.How many 360 angles does it take to make a full turn?

Comparing Revolutions, Degrees, and Radians

words | rev | deg |
---|---|---|

quarter turn | 1/4 | 90° |

half turn | 1/2 | 180° |

three-quarter turn | 3/4 | 270° |

full turn | 1 | 360° |

How many right angles are there in a right triangle?

The right triangle has one

**90**degree angle and two acute (<**90**degree) angles. Since the sum of the angles of a triangle is always 180 degrees The two sides of the triangle that are by the right angle are called the legs and the side opposite of the right angle is called the hypotenuse.