Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$180°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$70°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$105°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$72°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$36°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$15°$

Identify the acute angle, right angle, obtuse angle and straight angle from the following:

$75°$