Yes in a 90 45 45 triangle
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
There are three angles in a triangle but to measure them you would use a protractor.
Use the pythagorean theorem.
Yes
Yes in a 90 45 45 triangle
No. The two acute angles in a right triangle must add up to 90 degrees. The two you have listed don't.
...a right triangle.
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
They have one 90 degree angle and two 45 degree angles
There are three angles in a triangle but to measure them you would use a protractor.
Use the pythagorean theorem.
Yes
Right angles are 90°. The total measure of a triangle is 180°. So, the sum of the other two angles must equal 90°.
An isosceles triangle has two equal angles.
Well, honey, the sum of all angles in a triangle is 180 degrees. So if two angles are already 54 degrees each, the third angle would be 72 degrees to make up the total. It's basic math, darling.
The sum of two complementary angles is 90 degrees. The three angles of a triangle add up to 180 degrees. Hence, if you subtract the complementary angles from 180, you have the measure of the third angle: 180 - 90 = 90 (this is the third angle) As a rule, if two angles of a triangle are complementary, the third angle is a right angle (90 deg). The three angles together form a right triangle.