Question

Activity : Complete the proof of the theorem.
Theorem: If measures of angles of a triangle are 45°, 45°. 90 then the length of each
Proof - A ABC, 2B = 90° and ZA= 2C = 45°
side containing the right angle is
x hypotenuse
... BC = AB
By Pythagoras theorem
AB + BC =
AB+ - AC (BC = AB)
. 2AB =
Fig. 3.31
.. AB-
. AB
AC
This property is called 45°-45°-90° theorem.​

Answer 1

Answer:

Activity : Complete the proof of the theorem.

Theorem: If measures of angles of a triangle are 45°, 45°. 90 then the length of each

Proof - A ABC, 2B = 90° and ZA= 2C = 45°

side containing the right angle is

x hypotenuse

... BC = AB

By Pythagoras theorem

AB + BC =

AB+ - AC (BC = AB)

. 2AB =

Fig. 3.31

.. AB-

. AB

AC

This property is called 45°-45°-90° theorem.

Answer 2

Step-by-step explanation:

Activity : Complete the proof of the theorem.

Theorem: If measures of angles of a triangle are 45°, 45°. 90 then the length of each

Proof - A ABC, 2B = 90° and ZA= 2C = 45°

side containing the right angle is

x hypotenuse

... BC = AB

By Pythagoras theorem

AB + BC =

AB+ - AC (BC = AB)

. 2AB =

Fig. 3.31

.. AB-

. AB

AC

This property is called 45°-45°-90° theorem.