Poor,

Second,

minute

In geometry,

Prove that bobby

More flexible

,

exist

solve

Always solve problems.

The methods used are as follows

：

Cutting length

Method,

Complementary method,

double；twofold

Method,

break

Semi-law and so on

.

1.

Prove the sum of related line segments by truncation or complement method

、

poor

question

so-called

Truncation method

This means that in a longer period of time.

On the line segment

Intercept one

Piecewise equal

that

Its two line segments

Hit a target/mark

one passage

,

then

Re-certification

open cutting

Housuo

Residual line

Duan Deng

what

The other of the two line segments.

.

so-called

Complementary method

that is

expand

Two lines

Duanzhong

shorter

about

project

,

manufacture

wait for

what

In a shorter line segment

Deyi

project

,

then

certificate

expand

Housuo

Get it

line segment

wait for

On a longer line segment

.

The above two methods

often

be used for

solve

two

line

part of

Besides,

poor

wait for

The problem of another line segment

.