Question

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1. Why does the door illustrate hinge theorem?
2. Why does a Scissor illustrate hinge theorem?
3. Why does a folder illustrate hinge theorem?​

Answer 1

Answer:

In geometry, the hinge theorem states that if two sides of one triangle are congruent to two sides of another triangle, and the included angle of the first is larger than the included angle of the second, then the third side of the first triangle is longer than the third side of the second triangle. This theorem is actually Propositions 24 of Book 1 of Euclid's Elements (sometimes called the open mouth theorem). The theorem states the following:

If two sides of one triangle are congruent, respectively, to two sides of a second triangle, and the included angle of the first triangle is larger than the included angle of the second, then the third side of the first triangle is longer than the third side of the second.

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