Book, Paragraph

 1      I,  1 |              knew beforehand that the angles of every triangle are equal
 2      I,  1 |       triangle are equal to two right angles; but it was only at the
 3      I,  1 |        without qualification that its angles were equal to two right
 4      I,  1 |               were equal to two right angles? No: clearly he knows not
 5      I,  4 |        triangle as such has two right angles, for it is essentially equal
 6      I,  4 |        essentially equal to two right angles.~An attribute belongs commensurately
 7      I,  4 |                1) the equality of its angles to two right angles is not
 8      I,  4 |               its angles to two right angles is not a commensurately
 9      I,  4 |            show that a figure has its angles equal to two right angles,
10      I,  4 |             angles equal to two right angles, this attribute cannot be
11      I,  4 |            square is a figure but its angles are not equal to two right
12      I,  4 |            are not equal to two right angles. On the other hand, any
13      I,  4 |            isosceles triangle has its angles equal to two right angles,
14      I,  4 |             angles equal to two right angles, yet isosceles triangle
15      I,  4 |              can be shown to have its angles equal to two right angles,
16      I,  4 |             angles equal to two right angles, or to possess any other
17      I,  4 |              is equality to two right angles a commensurately universal
18      I,  5 |      parallelism depends not on these angles being equal to one another
19      I,  5 |          would be thought to have its angles equal to two right angles
20      I,  5 |             angles equal to two right angles qua isosceles. An instance
21      I,  5 |             kind of triangle that its angles are equal to two right angles,
22      I,  5 |         angles are equal to two right angles, whether by means of the
23      I,  5 |  sophistically, that triangle has its angles equal to two right angles,
24      I,  5 |             angles equal to two right angles, nor does one yet know that
25      I,  5 |       differentiae proceeds. Thus the angles of a brazen isosceles triangle
26      I,  5 |       triangle are equal to two right angles: but eliminate brazen and
27      I,  9 |            the property of possessing angles equal to two right angles
28      I,  9 |             angles equal to two right angles as belonging to that subject
29      I,  23|             attribute of having their angles equal to two right angles
30      I,  23|             angles equal to two right angles in virtue of a common middle;
31      I,  24|              If equality to two right angles is attributable to its subject
32      I,  24|           since equality to two right angles belongs to all triangles,
33      I,  24|               isosceles which has its angles so related. It follows that
34      I,  24|           when we learn that exterior angles are equal to four right
35      I,  24|               are equal to four right angles because they are the exterior
36      I,  24|         because they are the exterior angles of an isosceles, there still
37      I,  24|        example, if one knows that the angles of all triangles are equal
38      I,  24|      triangles are equal to two right angles, one knows in a sense-potentially-that
39      I,  24| sense-potentially-that the isosceles’ angles also are equal to two right
40      I,  24|           also are equal to two right angles, even if one does not know
41      I,  31|               that a triangle has its angles equal to two right angles,
42      I,  31|             angles equal to two right angles, we should still be looking
43     II,  2 |      attribute such as equal to right angles, or greater or less.~
44     II,  3 |                every triangle has its angles equal to two right angles".
45     II,  3 |             angles equal to two right angles". An argument proving this
46     II,  3 |           have been proved to possess angles equal to two right angles,
47     II,  3 |             angles equal to two right angles, then this attribute has
48     II,  8 |        necessitates: does it make the angles of a triangle equal or not
49     II,  8 |             or not equal to two right angles? When we have found the
50     II,  11|               B the half of two right angles, C the angle in a semicircle.
51     II,  11|            for C is half of two right angles. Therefore it is the assumption
52     II,  11|              B, the half of two right angles, from which it follows that
53     II,  17|             sides and equality of the angles, in the case of colours
54     II,  17|            the possession of external angles equal to four right angles
55     II,  17|            angles equal to four right angles is an attribute wider than
56     II,  17|            all figures whose external angles are equal to four right
57     II,  17|               are equal to four right angles). And the middle likewise