# Two angles

The triangles ABC and A'B'C 'are similar. In the ABC triangle, the two angles are 25° and 65°. Explain why in the triangle A'B'C 'is the sum of two angles of 90 degrees.

**Result****Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

Tips to related online calculators

See also our trigonometric triangle calculator.

#### Following knowledge from mathematics are needed to solve this word math problem:

## Next similar math problems:

- Triangles

Find out whether given sizes of the angles can be interior angles of a triangle: a) 23°10',84°30',72°20' b) 90°,41°33',48°37' c) 14°51',90°,75°49' d) 58°58',59°59',60°3' - Angles in triangle

Calculate the alpha angle in the triangle if beta is 61 degrees and 98 gamma degrees. - Triangle radians

The size of two internal angles of a triangle ABC are α=6/18π and β=7/18π. Calculate the size of the third angle. - 3-bracket 3

Two angles in a triangle are 90° and 60°. Has triangle at least two equal sides? - Rectangular trapezoid

How many inner right angles has a rectangular trapezoid? - Similarity

Are two right triangles similar to each other if the first one has a acute angle 70° and second one has acute angle 20°? - Parallelogram

In the parallelogram we know one internal angle 67°33`. Calculate the other internal angles. - Rhombus angles

If one angle in the rhombus is 159°, what is it neighboring angle in rhombus? - Angles 1

It is true neighboring angles have not common arm? - 3-bracket

May be the largest angle in the triangle less than 20°? - Chord

Point on the circle is the end point of diameter and end point of chord length of radius. What angle between chord and diameter? - Diagonal

Can a rhombus have the same length diagonal and side? - QuizQ

An isosceles triangle has two sides of length 7 km and 39 km. How long is a third side? - Midpoints

Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 45. How long is perimeter of triangle ABC? - Write 2

Write 791 thousandths as fraction in expanded form. - The diagram

The diagram is a cone of radius 8cm and height 10cm. The diameter of the base is. .. - Pizza 4

Marcus ate half pizza on monday night. He than ate one third of the remaining pizza on Tuesday. Which of the following expressions show how much pizza marcus ate in total?