Math and Arithmetic

Vertical

True

# 1

Angle DEF is the same as angle FED.

5.40 :) your freaking welcome

1 unit

scalene triangle

2.50 cm

letters of the alphabet

If two angles of a triangle each measure 55 what is the measure of the third angle?

You must have more information about the triangle. If you know the angles, and two of them are equal, it is an isosceles triangle. If all three of the angles are sixty-degrees, it is an equilateral triangle. If none of the angles are the same, it is a scalene triangle. If one of the angles is ninety degrees, it is a right triangle (right triangles may also be scalene or isosceles). If you know the side lengths and two of them are equal, it is isosceles. If they are all equal, it is equilateral. If none of them are equal, it is scalene. A scalene or isosceles triangle may also be a right triangle, which you could determine from side lengths using the pythagorean theorem.

A bit difficult to answer without the figure!

You find the arc measure and then you divide it in half to find the inscribed angle

6a+7b

GEF is the alternate interior angle of angle hge.

That depends on what type of triangle it is but in general:-

180-interior angle = exterior angle

It is a right angle triangle because the 3rd angle has to be 90 degrees

Is it true

ABC

Complementary angles add up to 90 degrees