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Angles and triangles: math practice, grade 7
Practise “Angles and triangles” online for free. Five right answers in a row make the tasks harder, two mistakes in a row make them easier. Right answers earn coins for games.
Example problems
These are only examples: the practice makes new tasks every time.
One of two adjacent angles is 70°. Find the other one.
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Answer
110
Two angles of a triangle are 45° and 30°. Find the third.
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Answer
105
The vertex angle of an isosceles triangle is 36°. Find a base angle.
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Answer
72
The vertex angle of an isosceles triangle is 26°. Find a base angle.
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Answer
77
An acute angle of a right triangle is 30°. Find the other acute angle.
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Answer
60
Two angles of a triangle are 55° and 80°. Find the exterior angle at the third vertex.
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Answer
135