Triangles
Triangles: this Effortless Math guide explains the topic in plain language, shows how it works through solved examples, and gives you free practice to try immediately, so the idea sticks instead of staying abstract.
Triangles, Example 1:
The sum of the inner angles of a triangle is (180°). So, (120°)(+)(35^°)(=)(155^°)(→)(180^°)(-) (155^°) (=) (25^°). The unknown angle is (25^°)
Exercises for Triangles
Find the measure of the unknown angle in each triangle.
1)
2)
- (color{blue}{70^°})
- (color{blue}{30^°})
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