Final answer:
Indifference curves for perfect complements are right angles due to the fixed proportions in which the goods are consumed, maintaining utility only at specific ratios.
Explanation:
Perfect complements are goods that are consumed together in fixed proportions, like cars and tires. The indifference curves for perfect complements are right angles because the consumer requires a specific ratio of the goods for utility, and any deviation from that ratio diminishes satisfaction.
For example, if you have one car, you need exactly four tires; having more than four tires won't increase utility without an additional car. This interdependency between goods leads to right angle indifference curves, showing the unique relationship between perfect complements.
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