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Examine the triangle. At which vertex is there a right angle, and how many right angles does the triangle have in all?
Hints
- Compare each angle visually with a square corner.
- First name the vertex, and then give the total number of right angles.
Solution
1. At \(A\), sides \(AB\) and \(AC\) meet at a right angle.
2. The angles at \(B\) and \(C\) are not right angles. The triangle has \(1\) right angle in all.
Answer
The right angle is at \(A\). The triangle has \(1\) right angle in all.
