by drawing the altitude from the right angle of a right triangle, three similar right triangles are...

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Page 1: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C
Page 2: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed

C

Page 3: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Corresponding angles are congruent

AND Corresponding sides

are proportional in length

Minimum Conditions:1. AA2. SAS3. SSS

Page 4: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

ActivityTake 10 minutes.Use graph paperDraw a right triangleDraw the altitude from the right angleProve that 3 similar triangles are formed

Page 5: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Activity 1: Birds of a feather stick together! Problem: Mother Nature Enraged!

Page 6: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

The altitude to the hypotenuse of a right triangle forms two triangles that are similar to each other and to the original triangle. 

leg

projection

leg

projection

Page 7: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Using the lengths of the corresponding sides of the triangles formed, we can determine the ratios and from this determine certain geometric properties

Page 8: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Information we have or need:1. Measurement of leg2. Measurement of projection3. Measurement of hypotenuse

Page 9: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

projection leg

leg hypotenuse

leg

proj

leg

proj

Page 10: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

projection leg

leg hypotenuse

leg

proj

leg

proj

Page 11: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

In a right triangle the length of the leg of a right triangle is the geometric mean between the length of its projection on the hypotenuse

Page 12: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Worksheet hand out on Property 1

Page 13: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Information we have or need:1. Altitude2. 2 segments that determine hypotenuse

i.e. projections

Page 14: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

projection altitude

altitude projection

proj proj

altitude

Page 15: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

In a right triangle the length of the altitude drawn from the right angle is the geometric mean of the length of the two segments that determine the hypotenuse

Page 16: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Worksheet on Property 2

Page 17: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Information we have or need:1. Hypotenuse2. Altitude3. Length of legs

Page 18: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

hypotenuse altitude leg leg

leg leg

hypotenuse

altitude

Page 19: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

In a right triangle, the product of the length of the hypotenuse and its corresponding altitude is equal to the product of the lengths of the legs.

Page 20: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Hand out on property 3

Page 21: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Pythagorean Theorem

Page 22: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Visions page 182, numbers 1,2,3,4

Page 23: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

Each leg of a right triangle is the mean proportional between the hypotenuse and the projection of the leg on the hypotenuse.

 

or

Page 24: By drawing the altitude from the right angle of a right triangle, three similar right triangles are formed C

The altitude to the hypotenuse of a right triangle is the mean proportional between the segments into which it divides the hypotenuse.