AJ's Scribe Post

Questions 3,9,14.

3.

A)420m

120m+300m = 420m

B)323m

a²+b²=c²

120m²+300m²=c²

(120x120)+(300x300)=c²

104400m²= c²

√104400m²= c²

√323²= √c²

C) Maria walked further by 97m

9.

A)4.2cm

B)34cm

14.

15.6mm

Homework, Show you know

Homework:

Show you know #1

A triangle has side lengths of 12 cm , 16 cm & 20 cm.

a) What are the area of the three squares that can be drawn on the sides of the triangle?

b) Is the triangle a right triangle? Explain.

Show you know #2

The side of a right angle triangle is 9 cm , 12 cm & 15 cm.

a) sketch a picture of the triangle. Draw a square on each side of a triangle.

b) what is the area of each square.

c) write an additional statement using the areas of the 3 squares.

Triangles

1) Explain a² + b² = c²

a² + b² = c²

(4x4) + (3x3) = c²

16 + 9 = c²

25 = c²

So, a² in this case is 4 cm².

B = 3 cm² and C = 5 cm²

So, when you want to figure out what the hypothenuse is, you use this formula. So once you figure out that c² = 25, you find the square root of 25 which is 5 and that's what the hypothenuse on this triangle is.

* Notice that 3², 4² and 5² are all perfect squares.

( 3x3=9 ) ( 4x4=16 ) ( 5x5=25)

2) Use a second grid to create a² + b² = c²

Make the triangle

Look at picture.

3) C² to C ... How ?

To find out how to get C² to C you have to multiply the number by itself.

Ex. 5² you have to multiply 5 by itself.

5x5 = 25.

Then if you want to get from C to C² you have to do the opposite. This time, you have to figure out the square root of your number.

Ex. The square root of 25 is 5.

Triangle formulas and and formula calculators

This site should help you figure out the length of the hypothenuse and plus it has many formulas.

THANKS FOR READING MY SCRIBE POST ! And extra thanks to Mr. Harbeck for helping me make this scribe better :) Please feel free to leave any comments and suggestions you have.