Interior angles in a triangle add up to 180˚. Triangles close triangleA polygon with three straight sides. have three sides, therefore they have three angles. Interior angles in a triangle sum to a ...
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Geometry Tutorial: Triangles, Congruency & Types
Discusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene, obtuse, right ...
A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...
What do you think of when you heard the word "angle"? Some people may say 'a corner' like the one on your table. However, it doesn’t have to be a corner as we will demonstrate later. An angle is a ...
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