# Determine Unknown Side Lengths in Two-Dimensional and Three-Dimensional Right Triangles

Standard 8.G.7 Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

Vocabulary for this standard:
This appears in three modules of the EngageNY curriculum
Module 2:  Lessons 15 and 16
Module 3:  Lessons 13 and 14
Quick thoughts:
A base is a number or expression being multiplied in an exponent
An exponent is a number that describes how many times to use the number in a multiplication.
A coefficient is a number used to multiply a variable.
A negative exponent expresses that the base is the denominator of a fraction instead of the numerator
The multiplicative property of exponents says that when you multiply powers with the same base you just have to add the exponents
The division property of exponents says that when you divide powers with the same base you just have to subtract the exponents
The power of a power property says that when you raise an exponent to another power, you just have to multiply the exponents
Vocab
• Kahoot
• Quizizz
• Quizlet
Instruction:
• Desmos
Drills:
• Quizizz
• Kahoot
• Formative