Frage 21

A triangle has sides of 7 centimetres, 7 centimetres and 4 centimetres. Which two of its angles are equal to each other?

The angle across from the shortest side and one of the others.
The two angles opposite the 7 centimetre sides.Richtige Antwort
All three angles are equal, since two sides match.
No two angles are equal, because the sides are not all equal.

Erklärung

Equal sides in a triangle always sit across from equal angles, so the two sides of 7 centimetres face the matching pair. Claiming that all three angles are equal would demand three sides of the same length, and the third side here measures 4 centimetres.

Erklärung

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