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183

90 - 45 = 45

45o This is because 90 minus 45 is 45.

Yes- The measurements of the angles added together must equal 180- 90+45+45=180 That would be a right angle.

90.

180 minus 66 minus 90 = 24.

45 x 4 =45+45+45+45=90+90=180

43

180

It is an isosceles triangle. 45 + 45 + 90 = 180 degrees

Because the total number of degrees in all triangle is equal to 180. Right triangles consist of one right angle(90) and two equal acute angles(45, 45).

They are: 45, 90, 135 and 180

90.

90/180 = 1/2

90 degrees

True. The reasoning behind it is this: the sum of the angles in any triangle will always equal 180o.Equilateral (all sides & angles equal)3x = 180x = 60Isosceles (two equal sides & angles) - can include Right triangle (90 + 45 + 45)x + 2y = 180y = (180-x)/2No matter what x equals (acute, right, or obtuse), y will be less than 90 (acute) because half of 180 is 90 and half of anything less than 180 will be less than 90.Scalene (all sides & angles different) - can include Right triangle (90 + x + y)x + y + z = 180If one angle is obtuse...x > 90180 - x y + z If together they are less than 90, then clearly both are less than 90 (acute)

.90

The GCF is 45.

45, 90, 135, 180, 225

They are: 45 90 135 180 and 225

45, 90, 135, 180, 225 and so on.

complement is 90 degrees minus angle supplement is 180 degrees minus angle 90-77 = 13 = complement 180-77 = 103 = supplement

140

The sum of the angles in a (planar) triangle always equals 180° 180° - 90° - 45° = 45°But on a sphere it depends on how big the triangles is...

45 and 45