it is not obtuse if the angles measure is 20.
is that what you were looking for?
During Hadean time, the solar system was forming within a cloud of dust and gas known as the solar nebula, which eventually spawned asteroids, comets, moons and planets. Astrogeophysicists theorize that about 4.52 billion years ago the proto-Earth collided with a Mars-size planetoid named Theia.
A. 150, because supplementary angles are angles that add up to 180 degrees.
When a stretch of coastline is formed from different types of rock, headlands and bays can form. ... When the softer rock is eroded inwards, the hard rock sticks out into the sea, forming a headland . Erosional features such as wave-cut platforms and cliffs can be found on headlands, since they are more open to the waves.
